Created attachment 591984 [details] emerge --info === libffi Summary === # of expected passes 6744 # of unexpected failures 712
Created attachment 591986 [details] build.log
> CFLAGS="-O2 -pipe -march=bdver2 -ggdb3" Do tests work if you use CFLAGS="-O2 -pipe -ggdb3"? """ Testing test-call.c, -W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL __ options: {additional_flags=-W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FA STCALL__ } {additional_flags=-I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/li bffi-3.3-rc0/testsuite/../include -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include/..} additional_flags=-L/mnt/portagetmp/portage/dev- libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../.libs {libs= -lffi} doing compile pid is 3918 -3918 pid is -1 output is status 0 PASS: libffi.bhaible/test-call.c -W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL__ (test for excess errors) spawning command ./test-call.exe exp9 file6 close result is child killed: SIGABRT FAIL: libffi.bhaible/test-call.c -W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL__ execution test """ The test fails with 'SIGABRT'. Can you get a backtrace from that particular failure?
Removing -march=bdver2 doesn't fix it. Can you advise how to get a backtrace from it? I can't find the compiled test to run with gdb. So I tried to compile it manually via: # i686-pc-linux-gnu-clang libffi.bhaible/test-call.c -W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL__ -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/../include -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include/.. -L/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../.libs -lffi warning: unknown warning option '-Wno-psabi' [-Wunknown-warning-option] warning: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Wunknown-warning-option] 2 warnings generated. (I used clang instead of gcc since I couldn't find the right combination of flags to pass there) # sudo -u nobody ./a.out long long f(float,long long,int):(1.4,0x35c6f707fffffffa,0xe)->0x35c6f70800000009 long long f(float,long long,int):(1.4,0x35c6f707fffffffa,0x0)->0x35c6f707fffffffb Аварийный останов # sudo -u nobody gdb ./a.out GNU gdb (Gentoo 8.3 vanilla) 8.3 Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://bugs.gentoo.org/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./a.out... (gdb) run Starting program: /mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/./a.out During startup program exited with code 1. (gdb) bt full No stack. (gdb)
If you use 'ulimit -c unlimited' in the shell you are running a.out you should get core file generated. gdb can load it as-is without the need to rerun the tool: 'gdb ./a.out core'. I suggest trying to reproduce the failure using the same toolchain that causes the crash (both should work though).
The problem is that I found no a.out so I had to guess what was used to build it, by copypasting some random flags from logs to compiler. Do you know some way to preserve a.out run by emerge instead of compiling my own?
Or, rather, I found no ./test-call.exe to execute, since it uses a better name there than the default a.out
Testsuite runs all tests under a single executable and is very eager to clear it's output. I don't see an easy way to get existing binary. But I found a way to extract exact build command: you can go to build dir (for me it's /tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86) and run $ make check RUNTESTFLAGS='-v -v' That would print something like: """ Executing on host: x86_64-pc-linux-gnu-gcc -m32 /tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/libffi.bhaible/test-call.c -W -Wall -Wno-psabi -DDGTEST=1 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -Os -DABI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL__ -I/tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include -I/tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/../include -I/tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include/.. -L/tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../.libs -lffi -lm -o ./test-call.exe (timeout = 300) """ But be careful: to run that command against local libffi you need to pass LD_LIBRARY_PATH to it's directory: in /tmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86 $ LD_LIBRARY_PATH=./.libs ./test-call.exe
$ x86_64-pc-linux-gnu-gcc -m32 /mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/libffi.bhaible/test-call.c -W -Wall -Wno-psabi -DDGTEST=27 -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-uninitialized -O0 -DA BI_NUM=FFI_FASTCALL -DABI_ATTR=__FASTCALL__ -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include -I/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0/testsuite/../include -I/mnt/portagetmp/portage/dev-l ibs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../include/.. -L/mnt/portagetmp/portage/dev-libs/libffi-3.3_rc0/work/libffi-3.3-rc0-abi_x86_32.x86/testsuite/../.libs -lffi -lm -o ./test-call.exe $ LD_LIBRARY_PATH=./.libs ./test-call.exe long long f(float,long long,int):(1.4,0x35c6f707fffffffa,0xe)->0x35c6f70800000009 long long f(float,long long,int):(1.4,0x35c6f707fffffffa,0x5659339a)->0x35c6f70856593395 Aborted (core dumped) $ gdb ./test-call.exe core GNU gdb (Gentoo 8.3 vanilla) 8.3 Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://bugs.gentoo.org/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./test-call.exe... [New LWP 20604] Core was generated by `./test-call.exe'. Program terminated with signal SIGABRT, Aborted. #0 0xf7f0fb59 in __kernel_vsyscall () (gdb) bt full #0 0xf7f0fb59 in __kernel_vsyscall () No symbol table info available. #1 0xf7c10a6a in __libc_signal_restore_set (set=0xffd6d53c) at ../sysdeps/unix/sysv/linux/internal-signals.h:84 resultvar = <optimized out> #2 __GI_raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:48 set = {__val = {0, 0, 1448711272, 4292269768, 0, 4292269436, 1448727776, 4294967295, 1448727776, 4159941232, 1448711272, 4292269768, 1448727776, 0, 1, 4159940880, 4222451713, 1448727776, 4159807884, 4156506539, 1448686745, 1448727844, 4159807884, 4156506539, 1448686745, 0, 1448686665, 0, 0, 4292270008, 0, 4292269680}} pid = <optimized out> tid = <optimized out> ret = 0 #3 0xf7bf92b6 in __GI_abort () at abort.c:79 save_stage = 1 act = {__sigaction_handler = {sa_handler = 0xffd6d7b8, sa_sigaction = 0xffd6d7b8}, sa_mask = {__val = {1, 0, 1448686665, 1448726540, 1, 0, 1448686621, 1448726576, 4159833464, 1448686621, 4159940880, 4292269908, 4159941324, 4159944992, 1, 1, 0, 4156817971, 1448726528, 4159938488, 1448686408, 4292270008, 4156751570, 4159833289, 4156450100, 4292270024, 902231816, 4159833289, 1448726528, 4292270024, 902231816, 4292270008}}, sa_flags = -135110016, sa_restorer = 0xfffffd28} sigs = {__val = {32, 0 <repeats 31 times>}} #4 0x56594358 in _fprintf () No symbol table info available. #5 0x56598000 in mixed_number_tests () No symbol table info available. #6 0x56598186 in main () No symbol table info available. (gdb)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d857bd00624d0922c870136f5f5684bc8af6be79 commit d857bd00624d0922c870136f5f5684bc8af6be79 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2019-11-06 00:02:48 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2019-11-06 00:02:48 +0000 dev-libs/libffi: bump up to 3.3_rc2 Most interesting fix is x86 stack alignment fix. This decreases flakiness in test failures on 32-bit x86 but does not eliminate all failures. While at it moved out most heavyweight tests to USE=test-bhaible. Reported-by: Alexey Reported-by: Toralf Förster Reported-by: tka Closes: https://bugs.gentoo.org/696854 Closes: https://bugs.gentoo.org/688466 Closes: https://bugs.gentoo.org/698506 Package-Manager: Portage-2.3.78, Repoman-2.3.17 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> dev-libs/libffi/Manifest | 1 + dev-libs/libffi/libffi-3.3_rc2.ebuild | 70 +++++++++++++++++++++++++++++++++++ dev-libs/libffi/metadata.xml | 1 + 3 files changed, 72 insertions(+)
