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* [glibc/azanella/mbrtoc8-c8rtomb] stdlib: Implement mbrtoc8, c8rtomb, and the char8_t typedef.
@ 2022-07-05 21:20 Adhemerval Zanella
0 siblings, 0 replies; 2+ messages in thread
From: Adhemerval Zanella @ 2022-07-05 21:20 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=59b3a18315c0878e34c6dada5d6941abdb939694
commit 59b3a18315c0878e34c6dada5d6941abdb939694
Author: Tom Honermann <tom@honermann.net>
Date: Thu Jun 30 08:52:14 2022 -0400
stdlib: Implement mbrtoc8, c8rtomb, and the char8_t typedef.
This change provides implementations for the mbrtoc8 and c8rtomb
functions adopted for C++20 via WG21 P0482R6 and for C2X via WG14
N2653. It also provides the char8_t typedef from WG14 N2653.
The mbrtoc8 and c8rtomb functions are declared in uchar.h in C2X
mode or when the _GNU_SOURCE macro or C++20 __cpp_char8_t feature
test macro is defined.
The char8_t typedef is declared in uchar.h in C2X mode or when the
_GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature
test macro is not defined (if __cpp_char8_t is defined, then char8_t
is a builtin type).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diff:
---
NEWS | 9 ++
sysdeps/mach/hurd/i386/libc.abilist | 2 +
sysdeps/mach/hurd/libhurduser.abilist | 0
sysdeps/mach/libmachuser.abilist | 0
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arc/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/csky/libc.abilist | 2 +
sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
sysdeps/unix/sysv/linux/microblaze/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/microblaze/le/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n32/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
sysdeps/unix/sysv/linux/or1k/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
.../linux/powerpc/powerpc32/nofpu/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc64/be/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc64/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
wcsmbs/Makefile | 2 +-
wcsmbs/Versions | 3 +
wcsmbs/c8rtomb.c | 132 +++++++++++++++++++++
wcsmbs/mbrtoc8.c | 126 ++++++++++++++++++++
wcsmbs/uchar.h | 21 ++++
42 files changed, 360 insertions(+), 1 deletion(-)
diff --git a/NEWS b/NEWS
index dbf351b895..df882ec243 100644
--- a/NEWS
+++ b/NEWS
@@ -51,6 +51,15 @@ Major new features:
Previously, input bytes not within the ASCII range resulted in
unpredictable output.
+* Support for the mbrtoc8 and c8rtomb multibyte/UTF-8 character conversion
+ functions has been added per the ISO C2X N2653 and C++20 P0482R6 proposals.
+ Support for the char8_t typedef has been added per the ISO C2X N2653
+ proposal. The functions are declared in uchar.h in C2X mode or when the
+ _GNU_SOURCE macro or C++20 __cpp_char8_t feature test macro is defined.
+ The char8_t typedef is declared in uchar.h in C2X mode or when the
+ _GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature test macro
+ is not defined (if __cpp_char8_t is defined, then char8_t is a builtin type).
+
Deprecated and removed features, and other changes affecting compatibility:
* Support for prelink will be removed in the next release; this includes
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index 4dc87e9061..66fb0e28fa 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -2289,6 +2289,8 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 close_range F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/mach/hurd/libhurduser.abilist b/sysdeps/mach/hurd/libhurduser.abilist
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/sysdeps/mach/libmachuser.abilist b/sysdeps/mach/libmachuser.abilist
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 16d34b55c6..516b029d30 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2616,10 +2616,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 3f794bea0f..dde08899fe 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2713,10 +2713,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 072627810c..ade44d3029 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2377,10 +2377,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index dbd5f07e6e..98b33708af 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -496,10 +496,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 0f02d79faa..05dbbe5bcc 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -493,10 +493,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 11d3b36a78..430a24349e 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2652,10 +2652,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 5caa1321b1..de44616526 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2601,10 +2601,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 276d7d5619..18b4fbf26e 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2785,10 +2785,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 5e2249518e..a8e959d417 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2551,10 +2551,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 802469a5b9..3a7e4ef6e4 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -497,10 +497,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 2f949397df..864ad2cdf8 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2728,10 +2728,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index f63cc9cd4c..163058420d 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2701,10 +2701,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index 88d2b707f9..a6debfda56 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2698,10 +2698,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 6c2bc0ee78..2b53d888de 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2693,10 +2693,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 09c9980d95..849aae4130 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2691,10 +2691,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 763920ea8f..37f6c1bf58 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2699,10 +2699,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 36d30558c1..ff1eb91e10 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2602,10 +2602,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index e4383fe464..361b91f547 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2740,10 +2740,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index 735a8eea7e..cb91606377 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2123,10 +2123,12 @@ GLIBC_2.35 wprintf F
GLIBC_2.35 write F
GLIBC_2.35 writev F
GLIBC_2.35 wscanf F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 715dd31afe..1264aff6ef 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2755,10 +2755,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index ac4b69e5fc..f96d6e37b5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2788,10 +2788,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index fd42f1bc11..e7082e1bd3 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2510,10 +2510,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index 24688916dd..1032c7e46a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2812,10 +2812,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 536eddf9f1..f932db7c22 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2379,10 +2379,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 214b4f1c87..ccc53b0bb8 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2579,10 +2579,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index bd738a4eb8..dbf6501007 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2753,10 +2753,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 170361236a..98f08a01b6 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2547,10 +2547,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 88fcd03300..df11cc8f13 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2608,10 +2608,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index f1115ef46d..4ee5513d18 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2605,10 +2605,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 6063da1acf..3cefa76871 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2748,10 +2748,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 780d2c0987..e3ea5c4383 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2574,10 +2574,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 56cad609fe..2944bc7837 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2525,10 +2525,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 2ed242a62d..47296193af 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2631,10 +2631,12 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsconfig F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
GLIBC_2.36 fspick F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 mount_setattr F
GLIBC_2.36 move_mount F
GLIBC_2.36 open_tree F
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index df9a85f4a9..bda281ad70 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -42,7 +42,7 @@ routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
wcsmbsload mbsrtowcs_l \
isoc99_wscanf isoc99_vwscanf isoc99_fwscanf isoc99_vfwscanf \
isoc99_swscanf isoc99_vswscanf \
- mbrtoc16 c16rtomb mbrtoc32 c32rtomb
+ mbrtoc8 c8rtomb mbrtoc16 c16rtomb mbrtoc32 c32rtomb
strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \
wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk \
diff --git a/wcsmbs/Versions b/wcsmbs/Versions
index 0b31c1b940..ec28acfb73 100644
--- a/wcsmbs/Versions
+++ b/wcsmbs/Versions
@@ -49,4 +49,7 @@ libc {
wcstof32; wcstof64; wcstof32x;
wcstof32_l; wcstof64_l; wcstof32x_l;
}
+ GLIBC_2.36 {
+ c8rtomb; mbrtoc8;
+ }
}
diff --git a/wcsmbs/c8rtomb.c b/wcsmbs/c8rtomb.c
new file mode 100644
index 0000000000..b564770eb5
--- /dev/null
+++ b/wcsmbs/c8rtomb.c
@@ -0,0 +1,132 @@
+/* UTF-8 to multibyte conversion.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <uchar.h>
+#include <wchar.h>
+
+
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
+
+size_t
+c8rtomb (char *s, char8_t c8, mbstate_t *ps)
+{
+ /* This implementation depends on the converter invoked by wcrtomb not
+ needing to retain state in either the top most bit of ps->__count or
+ in ps->__value between invocations. This implementation uses the
+ top most bit of ps->__count to indicate that trailing code units are
+ expected and uses ps->__value to store previously seen code units. */
+
+ wchar_t wc;
+
+ if (ps == NULL)
+ ps = &state;
+
+ if (s == NULL)
+ {
+ /* if 's' is a null pointer, behave as if u8'\0' was passed as 'c8'. If
+ this occurs for an incomplete code unit sequence, then an error will
+ be reported below. */
+ c8 = u8""[0];
+ }
+
+ if (! (ps->__count & 0x80000000))
+ {
+ /* Initial state. */
+ if ((c8 >= 0x80 && c8 <= 0xC1) || c8 >= 0xF5)
+ {
+ /* An invalid lead code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (c8 >= 0xC2)
+ {
+ /* A valid lead code unit. */
+ ps->__count |= 0x80000000;
+ ps->__value.__wchb[0] = c8;
+ ps->__value.__wchb[3] = 1;
+ return 0;
+ }
+ /* A single byte (ASCII) code unit. */
+ wc = c8;
+ }
+ else
+ {
+ char8_t cu1 = ps->__value.__wchb[0];
+ if (ps->__value.__wchb[3] == 1)
+ {
+ /* A single lead code unit was previously seen. */
+ if ((c8 < 0x80 || c8 > 0xBF)
+ || (cu1 == 0xE0 && c8 < 0xA0)
+ || (cu1 == 0xED && c8 > 0x9F)
+ || (cu1 == 0xF0 && c8 < 0x90)
+ || (cu1 == 0xF4 && c8 > 0x8F))
+ {
+ /* An invalid second code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (cu1 >= 0xE0)
+ {
+ /* A three or four code unit sequence. */
+ ps->__value.__wchb[1] = c8;
+ ++ps->__value.__wchb[3];
+ return 0;
+ }
+ wc = ((cu1 & 0x1F) << 6)
+ + (c8 & 0x3F);
+ }
+ else
+ {
+ char8_t cu2 = ps->__value.__wchb[1];
+ /* A three or four byte code unit sequence. */
+ if (c8 < 0x80 || c8 > 0xBF)
+ {
+ /* An invalid third or fourth code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (ps->__value.__wchb[3] == 2 && cu1 >= 0xF0)
+ {
+ /* A four code unit sequence. */
+ ps->__value.__wchb[2] = c8;
+ ++ps->__value.__wchb[3];
+ return 0;
+ }
+ if (cu1 < 0xF0)
+ {
+ wc = ((cu1 & 0x0F) << 12)
+ + ((cu2 & 0x3F) << 6)
+ + (c8 & 0x3F);
+ }
+ else
+ {
+ char8_t cu3 = ps->__value.__wchb[2];
+ wc = ((cu1 & 0x07) << 18)
+ + ((cu2 & 0x3F) << 12)
+ + ((cu3 & 0x3F) << 6)
+ + (c8 & 0x3F);
+ }
+ }
+ ps->__count &= 0x7fffffff;
+ ps->__value.__wch = 0;
+ }
+
+ return wcrtomb (s, wc, ps);
+}
diff --git a/wcsmbs/mbrtoc8.c b/wcsmbs/mbrtoc8.c
new file mode 100644
index 0000000000..dd80b5282d
--- /dev/null
+++ b/wcsmbs/mbrtoc8.c
@@ -0,0 +1,126 @@
+/* Multibyte to UTF-8 conversion.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <gconv.h>
+#include <uchar.h>
+#include <wcsmbsload.h>
+
+#include <sysdep.h>
+
+#ifndef EILSEQ
+# define EILSEQ EINVAL
+#endif
+
+
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
+
+size_t
+mbrtoc8 (char8_t *pc8, const char *s, size_t n, mbstate_t *ps)
+{
+ /* This implementation depends on the converter invoked by mbrtowc not
+ needing to retain state in either the top most bit of ps->__count or
+ in ps->__value between invocations. This implementation uses the
+ top most bit of ps->__count to indicate that trailing code units are
+ yet to be written and uses ps->__value to store those code units. */
+
+ if (ps == NULL)
+ ps = &state;
+
+ /* If state indicates that trailing code units are yet to be written, write
+ those first regardless of whether 's' is a null pointer. */
+ if (ps->__count & 0x80000000)
+ {
+ /* ps->__value.__wchb[3] stores the index of the next code unit to
+ write. Code units are stored in reverse order. */
+ size_t i = ps->__value.__wchb[3];
+ if (pc8 != NULL)
+ {
+ *pc8 = ps->__value.__wchb[i];
+ }
+ if (i == 0)
+ {
+ ps->__count &= 0x7fffffff;
+ ps->__value.__wch = 0;
+ }
+ else
+ --ps->__value.__wchb[3];
+ return -3;
+ }
+
+ if (s == NULL)
+ {
+ /* if 's' is a null pointer, behave as if a null pointer was passed for
+ 'pc8', an empty string was passed for 's', and 1 passed for 'n'. */
+ pc8 = NULL;
+ s = "";
+ n = 1;
+ }
+
+ wchar_t wc;
+ size_t result;
+
+ result = mbrtowc (&wc, s, n, ps);
+ if (result <= n)
+ {
+ if (wc <= 0x7F)
+ {
+ if (pc8 != NULL)
+ *pc8 = wc;
+ }
+ else if (wc <= 0x7FF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xC0 + ((wc >> 6) & 0x1F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 0;
+ ps->__count |= 0x80000000;
+ }
+ else if (wc <= 0xFFFF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xE0 + ((wc >> 12) & 0x0F);
+ ps->__value.__wchb[1] = 0x80 + ((wc >> 6) & 0x3F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 1;
+ ps->__count |= 0x80000000;
+ }
+ else if (wc <= 0x10FFFF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xF0 + ((wc >> 18) & 0x07);
+ ps->__value.__wchb[2] = 0x80 + ((wc >> 12) & 0x3F);
+ ps->__value.__wchb[1] = 0x80 + ((wc >> 6) & 0x3F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 2;
+ ps->__count |= 0x80000000;
+ }
+ }
+ if (result == 0 && wc != 0)
+ {
+ /* mbrtowc() never returns -3. When a MB sequence converts to multiple
+ WCs, no input is consumed when writing the subsequent WCs resulting
+ in a result of 0 even if a null character wasn't written. */
+ result = -3;
+ }
+
+ return result;
+}
diff --git a/wcsmbs/uchar.h b/wcsmbs/uchar.h
index 051cdcbeb5..c37e8619a0 100644
--- a/wcsmbs/uchar.h
+++ b/wcsmbs/uchar.h
@@ -31,6 +31,13 @@
#include <bits/types.h>
#include <bits/types/mbstate_t.h>
+/* Declare the C2x char8_t typedef in C2x modes, but only if the C++
+ __cpp_char8_t feature test macro is not defined. */
+#if __GLIBC_USE (ISOC2X) && !defined __cpp_char8_t
+/* Define the 8-bit character type. */
+typedef unsigned char char8_t;
+#endif
+
#ifndef __USE_ISOCXX11
/* Define the 16-bit and 32-bit character types. */
typedef __uint_least16_t char16_t;
@@ -40,6 +47,20 @@ typedef __uint_least32_t char32_t;
__BEGIN_DECLS
+/* Declare the C2x mbrtoc8() and c8rtomb() functions in C2x modes or if
+ the C++ __cpp_char8_t feature test macro is defined. */
+#if __GLIBC_USE (ISOC2X) || defined __cpp_char8_t
+/* Write char8_t representation of multibyte character pointed
+ to by S to PC8. */
+extern size_t mbrtoc8 (char8_t *__restrict __pc8,
+ const char *__restrict __s, size_t __n,
+ mbstate_t *__restrict __p) __THROW;
+
+/* Write multibyte representation of char8_t C8 to S. */
+extern size_t c8rtomb (char *__restrict __s, char8_t __c8,
+ mbstate_t *__restrict __ps) __THROW;
+#endif
+
/* Write char16_t representation of multibyte character pointed
to by S to PC16. */
extern size_t mbrtoc16 (char16_t *__restrict __pc16,
^ permalink raw reply [flat|nested] 2+ messages in thread
* [glibc/azanella/mbrtoc8-c8rtomb] stdlib: Implement mbrtoc8, c8rtomb, and the char8_t typedef.
@ 2022-07-04 19:05 Adhemerval Zanella
0 siblings, 0 replies; 2+ messages in thread
From: Adhemerval Zanella @ 2022-07-04 19:05 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a7512d34b66c8d5f27454b8bcd87269c9c187864
commit a7512d34b66c8d5f27454b8bcd87269c9c187864
Author: Tom Honermann <tom@honermann.net>
Date: Thu Jun 30 08:52:14 2022 -0400
stdlib: Implement mbrtoc8, c8rtomb, and the char8_t typedef.
This change provides implementations for the mbrtoc8 and c8rtomb
functions adopted for C++20 via WG21 P0482R6 and for C2X via WG14
N2653. It also provides the char8_t typedef from WG14 N2653.
The mbrtoc8 and c8rtomb functions are declared in uchar.h in C2X
mode or when the _GNU_SOURCE macro or C++20 __cpp_char8_t feature
test macro is defined.
The char8_t typedef is declared in uchar.h in C2X mode or when the
_GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature
test macro is not defined (if __cpp_char8_t is defined, then char8_t
is a builtin type).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diff:
---
NEWS | 9 ++
sysdeps/mach/hurd/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arc/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/csky/libc.abilist | 2 +
sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
sysdeps/unix/sysv/linux/microblaze/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/microblaze/le/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n32/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
sysdeps/unix/sysv/linux/or1k/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
.../linux/powerpc/powerpc32/nofpu/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc64/be/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc64/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
wcsmbs/Makefile | 2 +-
wcsmbs/Versions | 3 +
wcsmbs/c8rtomb.c | 132 +++++++++++++++++++++
wcsmbs/mbrtoc8.c | 126 ++++++++++++++++++++
wcsmbs/uchar.h | 21 ++++
40 files changed, 360 insertions(+), 1 deletion(-)
diff --git a/NEWS b/NEWS
index b0a3d7e512..94243e2170 100644
--- a/NEWS
+++ b/NEWS
@@ -46,6 +46,15 @@ Major new features:
to more flexibly configure and operate on filesystem mounts. The new
mount APIs are specifically designed to work with namespaces.
+* Support for the mbrtoc8 and c8rtomb multibyte/UTF-8 character conversion
+ functions has been added per the ISO C2X N2653 and C++20 P0482R6 proposals.
+ Support for the char8_t typedef has been added per the ISO C2X N2653
+ proposal. The functions are declared in uchar.h in C2X mode or when the
+ _GNU_SOURCE macro or C++20 __cpp_char8_t feature test macro is defined.
+ The char8_t typedef is declared in uchar.h in C2X mode or when the
+ _GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature test macro
+ is not defined (if __cpp_char8_t is defined, then char8_t is a builtin type).
+
Deprecated and removed features, and other changes affecting compatibility:
* Support for prelink will be removed in the next release; this includes
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index 4dc87e9061..66fb0e28fa 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -2289,6 +2289,8 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 close_range F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 8dba065b81..b3cf9fdd70 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2616,8 +2616,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 08f4750022..2a45006462 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2713,8 +2713,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 75db763023..0ac6bba241 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2377,8 +2377,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index fa33f317ac..bfa763906b 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -496,8 +496,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index dba2e4ce42..ffcd7ca432 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -493,8 +493,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index e6ff921c29..940777b118 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2652,8 +2652,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 8a40cece83..508efe6626 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2601,8 +2601,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index a89826049f..16b91fcee9 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2785,8 +2785,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index d1d96b7469..51b646790d 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2551,8 +2551,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 63a62f267a..ddb43651f2 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -497,8 +497,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index f68325f9bc..3db7deb4d0 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2728,8 +2728,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 247af2075c..94afb7ad0b 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2701,8 +2701,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index b0ac3f9009..5873751425 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2698,8 +2698,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index b22cd6bf2f..f296e4edb7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2693,8 +2693,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 12fc2cce3e..1888756819 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2691,8 +2691,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index d3e96dfd43..7dfacee25b 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2699,8 +2699,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index cb58ed4db0..53e188aafe 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2602,8 +2602,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 61ad58a599..bc6a836b1b 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2740,8 +2740,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index 1260dc4e2e..299fa67961 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2123,8 +2123,10 @@ GLIBC_2.35 wprintf F
GLIBC_2.35 write F
GLIBC_2.35 writev F
GLIBC_2.35 wscanf F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 363939762c..a5a072394d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2755,8 +2755,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index f512ad8baf..2d26fd8639 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2788,8 +2788,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index c9bdc9859c..d9f1c593ea 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2510,8 +2510,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index f091be30bd..874f33dbcc 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2812,8 +2812,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 7ea73f9af8..465798a56f 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2379,8 +2379,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 333fa62714..ecc0544c05 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2579,8 +2579,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index a867467b12..3e8d00d513 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2753,8 +2753,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index dbad5b3163..a872a3d186 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2547,8 +2547,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 6f755cc173..a2938ca2be 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2608,8 +2608,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 77d936aa3c..ef318251c5 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2605,8 +2605,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 09bb4363e1..2e2fbe72e2 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2748,8 +2748,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 9df9cb6adb..e1991259cd 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2574,8 +2574,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 4829450ad0..7d0843d1d8 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2525,8 +2525,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index caea228bcb..761958f768 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2631,8 +2631,10 @@ GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
GLIBC_2.35 epoll_pwait2 F
GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 c8rtomb F
GLIBC_2.36 fsmount F
GLIBC_2.36 fsopen F
+GLIBC_2.36 mbrtoc8 F
GLIBC_2.36 move_mount F
GLIBC_2.36 pidfd_getfd F
GLIBC_2.36 pidfd_open F
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index df9a85f4a9..bda281ad70 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -42,7 +42,7 @@ routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
wcsmbsload mbsrtowcs_l \
isoc99_wscanf isoc99_vwscanf isoc99_fwscanf isoc99_vfwscanf \
isoc99_swscanf isoc99_vswscanf \
- mbrtoc16 c16rtomb mbrtoc32 c32rtomb
+ mbrtoc8 c8rtomb mbrtoc16 c16rtomb mbrtoc32 c32rtomb
strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \
wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk \
diff --git a/wcsmbs/Versions b/wcsmbs/Versions
index 0b31c1b940..ec28acfb73 100644
--- a/wcsmbs/Versions
+++ b/wcsmbs/Versions
@@ -49,4 +49,7 @@ libc {
wcstof32; wcstof64; wcstof32x;
wcstof32_l; wcstof64_l; wcstof32x_l;
}
+ GLIBC_2.36 {
+ c8rtomb; mbrtoc8;
+ }
}
diff --git a/wcsmbs/c8rtomb.c b/wcsmbs/c8rtomb.c
new file mode 100644
index 0000000000..b564770eb5
--- /dev/null
+++ b/wcsmbs/c8rtomb.c
@@ -0,0 +1,132 @@
+/* UTF-8 to multibyte conversion.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <uchar.h>
+#include <wchar.h>
+
+
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
+
+size_t
+c8rtomb (char *s, char8_t c8, mbstate_t *ps)
+{
+ /* This implementation depends on the converter invoked by wcrtomb not
+ needing to retain state in either the top most bit of ps->__count or
+ in ps->__value between invocations. This implementation uses the
+ top most bit of ps->__count to indicate that trailing code units are
+ expected and uses ps->__value to store previously seen code units. */
+
+ wchar_t wc;
+
+ if (ps == NULL)
+ ps = &state;
+
+ if (s == NULL)
+ {
+ /* if 's' is a null pointer, behave as if u8'\0' was passed as 'c8'. If
+ this occurs for an incomplete code unit sequence, then an error will
+ be reported below. */
+ c8 = u8""[0];
+ }
+
+ if (! (ps->__count & 0x80000000))
+ {
+ /* Initial state. */
+ if ((c8 >= 0x80 && c8 <= 0xC1) || c8 >= 0xF5)
+ {
+ /* An invalid lead code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (c8 >= 0xC2)
+ {
+ /* A valid lead code unit. */
+ ps->__count |= 0x80000000;
+ ps->__value.__wchb[0] = c8;
+ ps->__value.__wchb[3] = 1;
+ return 0;
+ }
+ /* A single byte (ASCII) code unit. */
+ wc = c8;
+ }
+ else
+ {
+ char8_t cu1 = ps->__value.__wchb[0];
+ if (ps->__value.__wchb[3] == 1)
+ {
+ /* A single lead code unit was previously seen. */
+ if ((c8 < 0x80 || c8 > 0xBF)
+ || (cu1 == 0xE0 && c8 < 0xA0)
+ || (cu1 == 0xED && c8 > 0x9F)
+ || (cu1 == 0xF0 && c8 < 0x90)
+ || (cu1 == 0xF4 && c8 > 0x8F))
+ {
+ /* An invalid second code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (cu1 >= 0xE0)
+ {
+ /* A three or four code unit sequence. */
+ ps->__value.__wchb[1] = c8;
+ ++ps->__value.__wchb[3];
+ return 0;
+ }
+ wc = ((cu1 & 0x1F) << 6)
+ + (c8 & 0x3F);
+ }
+ else
+ {
+ char8_t cu2 = ps->__value.__wchb[1];
+ /* A three or four byte code unit sequence. */
+ if (c8 < 0x80 || c8 > 0xBF)
+ {
+ /* An invalid third or fourth code unit. */
+ __set_errno (EILSEQ);
+ return -1;
+ }
+ if (ps->__value.__wchb[3] == 2 && cu1 >= 0xF0)
+ {
+ /* A four code unit sequence. */
+ ps->__value.__wchb[2] = c8;
+ ++ps->__value.__wchb[3];
+ return 0;
+ }
+ if (cu1 < 0xF0)
+ {
+ wc = ((cu1 & 0x0F) << 12)
+ + ((cu2 & 0x3F) << 6)
+ + (c8 & 0x3F);
+ }
+ else
+ {
+ char8_t cu3 = ps->__value.__wchb[2];
+ wc = ((cu1 & 0x07) << 18)
+ + ((cu2 & 0x3F) << 12)
+ + ((cu3 & 0x3F) << 6)
+ + (c8 & 0x3F);
+ }
+ }
+ ps->__count &= 0x7fffffff;
+ ps->__value.__wch = 0;
+ }
+
+ return wcrtomb (s, wc, ps);
+}
diff --git a/wcsmbs/mbrtoc8.c b/wcsmbs/mbrtoc8.c
new file mode 100644
index 0000000000..dd80b5282d
--- /dev/null
+++ b/wcsmbs/mbrtoc8.c
@@ -0,0 +1,126 @@
+/* Multibyte to UTF-8 conversion.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <gconv.h>
+#include <uchar.h>
+#include <wcsmbsload.h>
+
+#include <sysdep.h>
+
+#ifndef EILSEQ
+# define EILSEQ EINVAL
+#endif
+
+
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
+
+size_t
+mbrtoc8 (char8_t *pc8, const char *s, size_t n, mbstate_t *ps)
+{
+ /* This implementation depends on the converter invoked by mbrtowc not
+ needing to retain state in either the top most bit of ps->__count or
+ in ps->__value between invocations. This implementation uses the
+ top most bit of ps->__count to indicate that trailing code units are
+ yet to be written and uses ps->__value to store those code units. */
+
+ if (ps == NULL)
+ ps = &state;
+
+ /* If state indicates that trailing code units are yet to be written, write
+ those first regardless of whether 's' is a null pointer. */
+ if (ps->__count & 0x80000000)
+ {
+ /* ps->__value.__wchb[3] stores the index of the next code unit to
+ write. Code units are stored in reverse order. */
+ size_t i = ps->__value.__wchb[3];
+ if (pc8 != NULL)
+ {
+ *pc8 = ps->__value.__wchb[i];
+ }
+ if (i == 0)
+ {
+ ps->__count &= 0x7fffffff;
+ ps->__value.__wch = 0;
+ }
+ else
+ --ps->__value.__wchb[3];
+ return -3;
+ }
+
+ if (s == NULL)
+ {
+ /* if 's' is a null pointer, behave as if a null pointer was passed for
+ 'pc8', an empty string was passed for 's', and 1 passed for 'n'. */
+ pc8 = NULL;
+ s = "";
+ n = 1;
+ }
+
+ wchar_t wc;
+ size_t result;
+
+ result = mbrtowc (&wc, s, n, ps);
+ if (result <= n)
+ {
+ if (wc <= 0x7F)
+ {
+ if (pc8 != NULL)
+ *pc8 = wc;
+ }
+ else if (wc <= 0x7FF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xC0 + ((wc >> 6) & 0x1F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 0;
+ ps->__count |= 0x80000000;
+ }
+ else if (wc <= 0xFFFF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xE0 + ((wc >> 12) & 0x0F);
+ ps->__value.__wchb[1] = 0x80 + ((wc >> 6) & 0x3F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 1;
+ ps->__count |= 0x80000000;
+ }
+ else if (wc <= 0x10FFFF)
+ {
+ if (pc8 != NULL)
+ *pc8 = 0xF0 + ((wc >> 18) & 0x07);
+ ps->__value.__wchb[2] = 0x80 + ((wc >> 12) & 0x3F);
+ ps->__value.__wchb[1] = 0x80 + ((wc >> 6) & 0x3F);
+ ps->__value.__wchb[0] = 0x80 + (wc & 0x3F);
+ ps->__value.__wchb[3] = 2;
+ ps->__count |= 0x80000000;
+ }
+ }
+ if (result == 0 && wc != 0)
+ {
+ /* mbrtowc() never returns -3. When a MB sequence converts to multiple
+ WCs, no input is consumed when writing the subsequent WCs resulting
+ in a result of 0 even if a null character wasn't written. */
+ result = -3;
+ }
+
+ return result;
+}
diff --git a/wcsmbs/uchar.h b/wcsmbs/uchar.h
index 051cdcbeb5..c37e8619a0 100644
--- a/wcsmbs/uchar.h
+++ b/wcsmbs/uchar.h
@@ -31,6 +31,13 @@
#include <bits/types.h>
#include <bits/types/mbstate_t.h>
+/* Declare the C2x char8_t typedef in C2x modes, but only if the C++
+ __cpp_char8_t feature test macro is not defined. */
+#if __GLIBC_USE (ISOC2X) && !defined __cpp_char8_t
+/* Define the 8-bit character type. */
+typedef unsigned char char8_t;
+#endif
+
#ifndef __USE_ISOCXX11
/* Define the 16-bit and 32-bit character types. */
typedef __uint_least16_t char16_t;
@@ -40,6 +47,20 @@ typedef __uint_least32_t char32_t;
__BEGIN_DECLS
+/* Declare the C2x mbrtoc8() and c8rtomb() functions in C2x modes or if
+ the C++ __cpp_char8_t feature test macro is defined. */
+#if __GLIBC_USE (ISOC2X) || defined __cpp_char8_t
+/* Write char8_t representation of multibyte character pointed
+ to by S to PC8. */
+extern size_t mbrtoc8 (char8_t *__restrict __pc8,
+ const char *__restrict __s, size_t __n,
+ mbstate_t *__restrict __p) __THROW;
+
+/* Write multibyte representation of char8_t C8 to S. */
+extern size_t c8rtomb (char *__restrict __s, char8_t __c8,
+ mbstate_t *__restrict __ps) __THROW;
+#endif
+
/* Write char16_t representation of multibyte character pointed
to by S to PC16. */
extern size_t mbrtoc16 (char16_t *__restrict __pc16,
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-07-05 21:20 [glibc/azanella/mbrtoc8-c8rtomb] stdlib: Implement mbrtoc8, c8rtomb, and the char8_t typedef Adhemerval Zanella
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2022-07-04 19:05 Adhemerval Zanella
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