https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100501
Bug ID: 100501
Summary: ICE: segmentation fault on embedded asm code
Product: gcc
Version: unknown
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.FRQzt2wMfl-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 20210510 (experimental) [master revision
:fb3a8fb4a:25f9f35a85ffee808fc1482b14d91176df59751b] (GCC)
$
$ gcc-trunk mutant.c
mutant.c: In function ‘foo’:
mutant.c:5:16: internal compiler error: Segmentation fault
4 | : "m"(({
| ~~
5 | if (8)
| ~~~^~~
6 | ;
| ~
7 | })));
| ~~
0xef73e3 crash_signal
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/toplev.c:327
0xbead04 is_gimple_variable
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimple-expr.h:84
0xbead04 is_gimple_id
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimple-expr.h:95
0xbead04 is_gimple_addressable
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimple-expr.h:122
0xbead04 is_gimple_lvalue(tree_node*)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimple-expr.c:595
0xc2742d gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:15038
0xc30a7d gimplify_asm_expr
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:6506
0xc26765 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:14416
0xc28fca gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:6877
0xc297fe gimplify_bind_expr
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:1421
0xc25a33 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:14284
0xc28fca gimplify_stmt(tree_node**, gimple**)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2a5c3 gimplify_body(tree_node*, bool)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:15328
0xc2aa11 gimplify_function_tree(tree_node*)
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/gimplify.c:15482
0xa7e737 cgraph_node::analyze()
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/cgraphunit.c:670
0xa81641 analyze_functions
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/cgraphunit.c:1234
0xa82111 symbol_table::finalize_compilation_unit()
/tmp/tmp.FRQzt2wMfl-gcc-builder/gcc/gcc/cgraphunit.c:2508
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.
$
$ cat mutant.c
void foo() {
__asm__(""
:
: "m"(({
if (8)
;
})));
}
$
