Bug 934590 – app-arch/xz-utils-5.6.2-r1[pgo] - In function 'hc_find_func': .../work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c:743:1: error: corrupted profile info: profile data is not flow-consistent

• Status: UNCONFIRMED
• Product: Gentoo Linux

[Description ernsteiswuerfel 2024-06-20 10:49:05 UTC]

Created attachment 896127 [details]
build.log (ppc, 5.6.2-r1)

5.4.2[pgo] builds fine on ppc but 5.6.2-r1[pgo] fails:

[...]
libtool: compile:  powerpc-unknown-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma -I../.. -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/api -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/common -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/check -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/rangecoder -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lzma -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/delta -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/simple -I/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/common -DTUKLIB_SYMBOL_PREFIX=lzma_ -pthread -fvisibility=hidden -Wall -Wextra -Wvla -Wformat=2 -Winit-self -Wmissing-include-dirs -Wshift-overflow=2 -Wstrict-overflow=3 -Walloc-zero -Wduplicated-cond -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wdate-time -Wsign-conversion -Wfloat-conversion -Wlogical-op -Waggregate-return -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -O2 -pipe -mcpu=7450 -mtune=7450 -maltivec -mabi=altivec -fprofile-use=/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/temp/ppc-pgo -fprofile-dir=/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/temp/ppc-pgo -fprofile-partial-training -c /var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c  -fPIC -DPIC -o .libs/liblzma_la-lz_encoder_mf.o
/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c: In function 'hc_find_func':
/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c:743:1: error: corrupted profile info: profile data is not flow-consistent
  743 | }
      | ^
/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c:743:1: error: corrupted profile info: number of executions for edge 10-18 thought to be 2511326
/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2/src/liblzma/lz/lz_encoder_mf.c:743:1: error: corrupted profile info: number of executions for edge 10-3 thought to be -111978
make[4]: *** [Makefile:1533: liblzma_la-lz_encoder_mf.lo] Error 1
make[4]: Leaving directory '/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2-.ppc/src/liblzma'
make[3]: *** [Makefile:1758: all-recursive] Error 1
make[3]: Leaving directory '/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2-.ppc/src/liblzma'
make[2]: *** [Makefile:427: all-recursive] Error 1
make[2]: Leaving directory '/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2-.ppc/src'
make[1]: *** [Makefile:596: all-recursive] Error 1
make[1]: Leaving directory '/var/tmp/portage/app-arch/xz-utils-5.6.2-r1/work/xz-5.6.2-.ppc'
make: *** [Makefile:486: all] Error 2
 * ERROR: app-arch/xz-utils-5.6.2-r1::gentoo failed (compile phase):
 *   emake failed


Without pgo 5.6.2-r1 builds fine on ppc. Also 5.6.2-r1[pgo] builds fine on ppc64. So this is probably a ppc (32bit?) specific issue?

[Comment 1 ernsteiswuerfel 2024-06-20 10:49:48 UTC]

Created attachment 896128 [details]
emerge --info

[Comment 2 Sam James 2024-06-25 03:19:10 UTC]

I think this has to be a GCC bug. Can you try different GCC versions for me?

[Comment 3 ernsteiswuerfel 2024-06-25 10:45:51 UTC]

(In reply to Sam James from comment #2)
> I think this has to be a GCC bug. Can you try different GCC versions for me?
Luckily the most recent GCC gets the job done. ;)

gcc-11.4.1_p20240111  ...   fails with +pgo
gcc-13.3.1_p20240614  ...   fails with +pgo
gcc-14.1.1_p20240622  ...   BUILDS OK with +pgo

Any other versions I should try?