https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69915
Bug ID: 69915 Summary: [6 Regression] ICE: SIGSEGV with -O -ftracer with broken backtrace Product: gcc Version: 6.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Target: x86_64-pc-linux-gnu, aarch64-unknown-linux-gnu Created attachment 37765 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37765&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -ftracer testcase.c testcase.c: In function 'foo': testcase.c:4:1: note: The ABI for passing parameters with 32-byte alignment has changed in GCC 4.6 foo (unsigned x, unsigned c, V v) ^~~ testcase.c:4:1: internal compiler error: Segmentation fault 0xbbbe9f crash_signal /repo/gcc-trunk/gcc/toplev.c:335 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. (gdb) bt #0 0x00007ffff6c50e88 in ?? () #1 0x00007ffff6c50e88 in ?? () #2 0x00007ffff6c50e88 in ?? () #3 0x00007ffff6c50e88 in ?? () #4 0x00007ffff6c50e88 in ?? () #5 0x0000006e00000000 in ?? () #6 0x00000000023c4290 in ?? () #7 0x0000000000000040 in ?? () #8 0x00007ffff6d54498 in ?? () #9 0x0000000000000002 in ?? () #10 0x00007ffff6d7b5a0 in ?? () #11 0x00007ffff6d7b5a0 in ?? () #12 0x00007fffffffd030 in ?? () #13 0x0000000000000000 in ?? () $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-233597-checking-yes-rtl-df-nographite/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-233597-checking-yes-rtl-df-nographite Thread model: posix gcc version 6.0.0 20160222 (experimental) (GCC) Out of tested targets (powerpc{,64}, sparc{,64}, i686, arm), only x86_64-pc-linux-gnu* and aarch64-unknown-linux-gnu seem to be affected. Tested revisions: trunk r233597 - ICE trunk r230518 - ICE 5-branch r233596 - OK