https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114339
Bug ID: 114339
Summary: [14 regression] Tor miscompiled with -O2 -mavx
-fno-vect-cost-model
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Tor fails its test suite with -O3 -march=znver2 -fno-vect-cost-model like:
```
$ ./configure CFLAGS="-O3 -march=znver2 -ggdb3 -fno-vect-cost-model"
--enable-all-bugs-are-fatal --disable-html-manual --disable-manpage
--disable-asciidoc --disable-memory-sentinels --disable-linker-hardening
--disable-seccomp --disable-libscrypt --disable-module-relay
--disable-module-dirauth --disable-module-pow && make -j$(nproc)
[...]
$ src/test/test --verbose entrynodes/node_filter --no-fork
assert(num_reachable_filtered_guards(gs, NULL) OP_EQ NUM): 7 vs 7Mar 14
09:50:56.182 [err] tor_assertion_failed_(): Bug:
src/feature/client/entrynodes.c:2072: get_retry_schedule: Assertion 0 failed;
aborting. (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: Tor 0.4.8.10: Assertion 0 failed in
get_retry_schedule at src/feature/client/entrynodes.c:2072: . Stack trace: (on
Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(log_backtrace_impl+0x58)
[0x55d7124029b8] (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(tor_assertion_failed_+0x14f)
[0x55d71241323f] (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(+0x4d80e7) [0x55d7122b80e7] (on Tor
0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug:
./test(entry_guards_update_filtered_sets+0x2c8) [0x55d7122bb048] (on Tor
0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(+0x2810be) [0x55d7120610be] (on Tor
0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(testcase_run_one+0x2f4)
[0x55d712239d74] (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(tinytest_main+0x218) [0x55d71223a5f8]
(on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(main+0x492) [0x55d711e77482] (on Tor
0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: /usr/lib64/libc.so.6(+0x25e6a)
[0x7f1b5816ce6a] (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: /usr/lib64/libc.so.6(__libc_start_main+0x85)
[0x7f1b5816cf25] (on Tor 0.4.8.10 )
Mar 14 09:50:56.183 [err] Bug: ./test(_start+0x21) [0x55d711e775a1] (on Tor
0.4.8.10 )
````
```
Program received signal SIGABRT, Aborted.
0x00007ffff7489cdc in ?? () from /usr/lib64/libc.so.6
(gdb) bt
#0 0x00007ffff7489cdc in ?? () from /usr/lib64/libc.so.6
#1 0x00007ffff7434032 in raise () from /usr/lib64/libc.so.6
#2 0x00007ffff741c4f2 in abort () from /usr/lib64/libc.so.6
#3 0x0000555555b39010 in tor_raw_abort_ () at src/lib/err/torerr.c:225
#4 0x0000555555b46e30 in tor_abort_ () at src/lib/log/util_bug.c:174
#5 0x0000555555a0fcde in get_retry_schedule (failing_since=<optimized out>,
now=1710410426, is_primary=<optimized out>) at
src/feature/client/entrynodes.c:2072
#6 entry_guard_consider_retry (guard=guard@entry=0x555555e6be60) at
src/feature/client/entrynodes.c:2089
#7 0x0000555555a0fff0 in entry_guard_consider_retry (guard=0x555555e6be60) at
src/feature/client/entrynodes.c:2084
#8 entry_guard_set_filtered_flags (options=options@entry=0x555555e1a4b0,
gs=gs@entry=0x555555e6b500, guard=0x555555e6be60) at
src/feature/client/entrynodes.c:1737
#9 0x0000555555a118aa in entry_guards_update_filtered_sets
(gs=gs@entry=0x555555e6b500) at src/feature/client/entrynodes.c:1758
#10 0x00005555557cded7 in test_entry_guard_node_filter (arg=<optimized out>) at
src/test/test_entrynodes.c:1037
#11 0x000055555599ece5 in testcase_run_bare_
(testcase=testcase@entry=0x555555da13d8 <entrynodes_tests+760>) at
src/ext/tinytest.c:107
#12 0x000055555599edb3 in testcase_run_one (group=group@entry=0x555555d99380
<testgroups+864>, testcase=0x555555da13d8 <entrynodes_tests+760>) at
src/ext/tinytest.c:272
#13 0x000055555599f60c in tinytest_main (c=c@entry=4, v=v@entry=0x7fffffffd928,
groups=groups@entry=0x555555d99020 <testgroups>) at src/ext/tinytest.c:454
#14 0x00005555555eb47b in main (c=4, v=<optimized out>) at
src/test/testing_common.c:424
(gdb)
```
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/14/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-14.0.9999/work/gcc-14.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/14
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/14/python
--enable-languages=c,c++,fortran,rust --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra,rtl
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
14.0.9999 p, commit 66ed76361b07f18610a134dca21c6945f03c6a6b'
--with-gcc-major-version-only --enable-libstdcxx-time --enable-lto
--disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-multilib
--with-multilib-list=m32,m64 --disable-fixed-point --enable-targets=all
--enable-libgomp --disable-libssp --disable-libada --disable-cet
--disable-systemtap --enable-valgrind-annotations --disable-vtable-verify
--disable-libvtv --with-zstd --with-isl --disable-isl-version-check
--enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --disable-fixincludes --with-build-config='bootstrap-O3
bootstrap-lto'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240311 (experimental)
31ce2e993d09dcad1ce139a2848a28de5931056d (Gentoo Hardened 14.0.9999 p, commit
66ed76361b07f18610a134dca21c6945f03c6a6b)
```
