https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100625
Bug ID: 100625
Summary: ICE on gimple program: Segmentation fault,
contains_struct_check(tree_node*,
tree_node_structure_enum, char const*, int, char
const*)
Product: gcc
Version: tree-ssa
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.eZIsobWkq2-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 20210514 (experimental) [master revision
:e5c3c8afa:f3b1516d9dfd969d7cc1ca6f26dec13478a1c458] (GCC)
$ cat mutant.c
__GIMPLE
foo() {
bb1:
bb1:;
}
$ gcc-trunk -fgimple mutant.c
mutant.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
2 | foo() {
| ^~~
mutant.c: In function ‘foo’:
mutant.c:4:1: error: duplicate label ‘bb1’
4 | bb1:;
| ^~~
mutant.c:3:1: note: previous definition of ‘bb1’ with type ‘void’
3 | bb1:
| ^~~
during GIMPLE pass: cfg
mutant.c:2:1: internal compiler error: Segmentation fault
2 | foo() {
| ^~~
0xef83e3 crash_signal
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/toplev.c:327
0xf38755 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree.h:3469
0xf38755 stmt_starts_bb_p
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:2784
0xf38755 make_blocks_1
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:552
0xf44fd6 make_blocks
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:661
0xf44fd6 build_gimple_cfg
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:226
0xf44fd6 execute_build_cfg
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:370
0xf44fd6 execute
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/tree-cfg.c:409
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.
