https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100624
Bug ID: 100624
Summary: ICE: Segmentation fault, gimplify_target_expr
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
_Atomic c;
void foo() { double j = c /= foo(); }
$ gcc-trunk mutant.c
mutant.c:1:9: warning: type defaults to ‘int’ in declaration of ‘c’
[-Wimplicit-int]
1 | _Atomic c;
| ^
mutant.c: In function ‘foo’:
mutant.c:2:1: error: void value not ignored as it ought to be
2 | void foo() { double j = c /= foo(); }
| ^~~~
mutant.c:2:27: internal compiler error: Segmentation fault
2 | void foo() { double j = c /= foo(); }
| ^~
0xef83e3 crash_signal
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/toplev.c:327
0xc34ee2 gimplify_target_expr
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6772
0xc269e2 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:14480
0xc29eaa gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6877
0xc274ab gimplify_statement_list
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:1879
0xc274ab gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:14528
0xc29eaa gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2a2d9 gimplify_compound_expr
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6077
0xc3049d gimplify_modify_expr_rhs
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:5398
0xc36c3a gimplify_modify_expr
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:5773
0xc26578 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:14083
0xc29eaa gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6877
0xc34ba7 gimplify_and_add(tree_node*, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:489
0xc34ba7 gimplify_decl_expr
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:1826
0xc270f2 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:14280
0xc29eaa gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2a6de gimplify_bind_expr
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:1421
0xc26913 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:14284
0xc29eaa gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2b4a3 gimplify_body(tree_node*, bool)
/tmp/tmp.eZIsobWkq2-gcc-builder/gcc/gcc/gimplify.c:15328
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.
