https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101453
Bug ID: 101453
Summary: ICE on compilable code: *** buffer overflow detected
***: terminated
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cnsun at uwaterloo dot ca
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.Rxxf6w92un-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210714 (experimental) [master revision
:8b95b2de5:a7098d6ef4e4e799dab8ef925c62b199d707694b] (GCC)
$ cat mutant.c
__attribute__((optimize(0x8080808080808080ull))) bak() {}
$ gcc-trunk mutant.c
*** buffer overflow detected ***: terminated
mutant.c:1:1: internal compiler error: Aborted
1 | __attribute__((optimize(0x8080808080808080ull))) bak() {}
| ^~~~~~~~~~~~~
0xf27883 crash_signal
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/toplev.c:328
0x9a0bb3 sprintf
/usr/include/x86_64-linux-gnu/bits/stdio2.h:36
0x9a0bb3 parse_optimize_options(tree_node*, bool)
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c-family/c-common.c:5802
0x9e54a8 handle_optimize_attribute
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c-family/c-attribs.c:5395
0x8e5f76 decl_attributes(tree_node**, tree_node*, int, tree_node*)
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/attribs.c:720
0x902f77 start_function(c_declspecs*, c_declarator*, tree_node*)
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c/c-decl.c:9452
0x96095e c_parser_declaration_or_fndef
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c/c-parser.c:2440
0x968e33 c_parser_external_declaration
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c/c-parser.c:1777
0x969899 c_parser_translation_unit
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c/c-parser.c:1650
0x969899 c_parse_file()
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c/c-parser.c:22121
0x9cb935 c_common_parse_file()
/tmp/tmp.Rxxf6w92un-gcc-builder/gcc/gcc/c-family/c-opts.c:1219
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
