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* [glibc/google/grte/v5-2.27/master] Use libc_hidden_* for __cmsg_nxthdr (bug 15105).
@ 2021-11-15 22:40 Fangrui Song
0 siblings, 0 replies; 2+ messages in thread
From: Fangrui Song @ 2021-11-15 22:40 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f39edfdeefcc823371cf6104aee76e45fb02825
commit 8f39edfdeefcc823371cf6104aee76e45fb02825
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Feb 15 20:59:12 2018 +0000
Use libc_hidden_* for __cmsg_nxthdr (bug 15105).
Among other localplt test failures when building with -Os, there are
libc.so PLT references for __cmsg_nxthdr. This is a simple case of a
function that is inlined for -O2 but not for -Os; this patch adds
libc_hidden_proto / libc_hidden_def for it to avoid a localplt failure
even when it is not inlined.
Tested for x86_64 (both that it removes this particular localplt
failure for -Os - but other such failures remain so the bug can't yet
be closed - and that the testsuite continues to pass without -Os).
[BZ #15105]
* include/sys/socket.h [!_ISOMAC] (__cmsg_nxthdr): Use
libc_hidden_proto.
* sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Use
libc_hidden_def.
(cherry picked from commit e4452a2d19279d4c90bcafe09ec3cbfd3efe9b6a)
Diff:
---
include/sys/socket.h | 2 ++
sysdeps/unix/sysv/linux/cmsg_nxthdr.c | 1 +
2 files changed, 3 insertions(+)
diff --git a/include/sys/socket.h b/include/sys/socket.h
index baec6e6439..26db0e0d77 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -154,5 +154,7 @@ libc_hidden_proto (__libc_sa_len)
# define SA_LEN(_x) __libc_sa_len((_x)->sa_family)
#endif
+libc_hidden_proto (__cmsg_nxthdr)
+
#endif
#endif
diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
index fa0468efda..bab0be6884 100644
--- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
+++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
@@ -37,3 +37,4 @@ __cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
return NULL;
return cmsg;
}
+libc_hidden_def (__cmsg_nxthdr)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [glibc/google/grte/v5-2.27/master] Use libc_hidden_* for __cmsg_nxthdr (bug 15105).
@ 2021-11-19 21:21 Fangrui Song
0 siblings, 0 replies; 2+ messages in thread
From: Fangrui Song @ 2021-11-19 21:21 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=633d14073f5d2f257e12ceffcdcd2ada51483af5
commit 633d14073f5d2f257e12ceffcdcd2ada51483af5
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Feb 15 20:59:12 2018 +0000
Use libc_hidden_* for __cmsg_nxthdr (bug 15105).
Among other localplt test failures when building with -Os, there are
libc.so PLT references for __cmsg_nxthdr. This is a simple case of a
function that is inlined for -O2 but not for -Os; this patch adds
libc_hidden_proto / libc_hidden_def for it to avoid a localplt failure
even when it is not inlined.
Tested for x86_64 (both that it removes this particular localplt
failure for -Os - but other such failures remain so the bug can't yet
be closed - and that the testsuite continues to pass without -Os).
[BZ #15105]
* include/sys/socket.h [!_ISOMAC] (__cmsg_nxthdr): Use
libc_hidden_proto.
* sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Use
libc_hidden_def.
(cherry picked from commit e4452a2d19279d4c90bcafe09ec3cbfd3efe9b6a)
Diff:
---
include/sys/socket.h | 2 ++
sysdeps/unix/sysv/linux/cmsg_nxthdr.c | 1 +
2 files changed, 3 insertions(+)
diff --git a/include/sys/socket.h b/include/sys/socket.h
index baec6e6439..26db0e0d77 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -154,5 +154,7 @@ libc_hidden_proto (__libc_sa_len)
# define SA_LEN(_x) __libc_sa_len((_x)->sa_family)
#endif
+libc_hidden_proto (__cmsg_nxthdr)
+
#endif
#endif
diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
index fa0468efda..bab0be6884 100644
--- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
+++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
@@ -37,3 +37,4 @@ __cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
return NULL;
return cmsg;
}
+libc_hidden_def (__cmsg_nxthdr)
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-11-15 22:40 [glibc/google/grte/v5-2.27/master] Use libc_hidden_* for __cmsg_nxthdr (bug 15105) Fangrui Song
2021-11-19 21:21 Fangrui Song
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