[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |slyfox at gcc dot gnu.org

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 106616 has been marked as a duplicate of this bug. ***

[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[slyfox at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

--- Comment #12 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106616#c0 provides hopefully
reproducible test.

[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[jbglaw@lug-owl.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

--- Comment #13 from Jan-Benedict Glaw <jbglaw@lug-owl.de> ---
GCC 13 (as of g:02c031088ac0bbf) triggers this for Linux's kallsys.c
(f9ff5644bcc04221bae56f922) for ia64.

[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[jbglaw@lug-owl.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

--- Comment #14 from Jan-Benedict Glaw <jbglaw@lug-owl.de> ---
Still observable as of a8994014041:

[...]
  ia64-linux-gcc -Wp,-MMD,kernel/.kallsyms.o.d -nostdinc -I./arch/ia64/include
-I./arch/ia64/include/generated  -I./include -I./arch/ia64/include/uapi
-I./arch/ia64/include/generated/uapi -I.
/include/uapi -I./include/generated/uapi -include
./include/linux/compiler-version.h -include ./include/linux/kconfig.h -include
./include/linux/compiler_types.h -D__KERNEL__ -DHAVE_WORKING_TEXT_ALIGN
-DHAVE_MODEL_SMALL_ATTRIBUTE -DHAVE_SERIALIZE_DIRECTIVE -fmacro-prefix-map=./=
-Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing
-fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration
-Werror=implicit-int -Werror=return-type -Wno-format-security -funsigned-char
-std=gnu11 -pipe -ffixed-r13 -mfixed-range=f12-f15,f32-f127 -frename-registers
-fno-optimize-sibling-calls -fno-delete-null-pointer-checks -Wno-frame-address
-Wno-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2
-fno-allow-store-data-races -Wframe-larger-than=2048 -fno-stack-protector
-Wno-main -Wno-unused-but-set-variable -Wno-unused-const-variable
-Wno-dangling-pointer -fomit-frame-pointer -ftrivial-auto-var-init=zero
-fno-stack-clash-protection -falign-functions=32 -Wdeclaration-after-statement
-Wvla -Wno-pointer-sign -Wcast-function-type -Wno-stringop-truncation
-Wno-stringop-overflow -Wno-restrict -Wno-maybe-uninitialized -Wno-array-bounds
-Wno-alloc-size-larger-than -Wimplicit-fallthrough=5 -fno-strict-overflow
-fno-stack-check -fconserve-stack -Werror=date-time
-Werror=incompatible-pointer-types -Werror=designated-init
-Wno-packed-not-aligned  -mconstant-gp  -DKBUILD_MODFILE='"kernel/kallsyms"'
-DKBUILD_BASENAME='"kallsyms"' -DKBUILD_MODNAME='"kallsyms"'
-D__KBUILD_MODNAME=kmod_kallsyms -c -o kernel/kallsyms.o kernel/kallsyms.c  
kernel/kallsyms.c: In function 'kallsyms_lookup_names':
kernel/kallsyms.c:268:1: error: qsort comparator non-negative on sorted output:
1
  268 | }
      | ^
during RTL pass: mach
kernel/kallsyms.c:268:1: internal compiler error: qsort checking failed
0x188b086 internal_error(char const*, ...)
 ???:0
0x18bf855 gcc_qsort(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
 ???:0
0x15c7a08 schedule_block(basic_block_def**, void*)
 ???:0
0x1685c1b schedule_ebb(rtx_insn*, rtx_insn*, bool)
 ???:0
0x168622d schedule_ebbs()
 ???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make[2]: *** [scripts/Makefile.build:252: kernel/kallsyms.o] Error 1
make[1]: *** [scripts/Makefile.build:494: kernel] Error 2
make: *** [Makefile:2026: .] Error 2

[Bug target/87281] qsort checking ICE in ia64_reorg building libgo

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

--- Comment #15 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Created attachment 56496
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56496&action=edit
Test that started failing on 20 July 2023

Another instance of this ICE appeared in my glibc bot on 20 July; compile
ibm1008_420.i with -O2. This failure was introduced by

commit ef28aadad6e5cff3d7494f3c97d435a6579a2e2d
Author: Jan Hubicka <jh@suse.cz>
Date:   Thu Jul 20 15:41:39 2023 +0200

    loop-ch improvements, part 3

although I fully expect it's really the same bug as for the other testcases
discussed here and it was just some perturbation to the processing of this test
that resulted in the appearance for that test with that commit.

[Bug target/87281] [14 Regression] qsort checking ICE in ia64_reorg building libgo

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2019-06-14 00:00:00         |2023-11-2
   Target Milestone|---                         |14.0
            Summary|qsort checking ICE in       |[14 Regression] qsort
                   |ia64_reorg building libgo   |checking ICE in ia64_reorg
                   |                            |building libgo

[Bug target/87281] [14 Regression] qsort checking ICE in ia64_reorg building libgo

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is surely latent for long, not sure if that "new" trigger warrants to
make it a 14 regression.  Anyway, ia64 -> P4.

[Bug target/87281] [14/15 Regression] qsort checking ICE in ia64_reorg building libgo

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87281

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|14.0                        |14.2

--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 14.1 is being released, retargeting bugs to GCC 14.2.