https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101290
Bug ID: 101290
Summary: ICE with -O1 on valid code: in
maybe_canonicalize_mem_ref_addr, at gimple-fold.c:5976
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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.66z1mEqhUB-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 20210701 (experimental) [master revision
:b1f5e3e73:a688c284dd3848b6c4ea553035f0f9769fb4fbc9] (GCC)
$ cat mutant.c
typedef *a;
typedef struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
struct {
unsigned b, c, d, e
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, d, e, f
} b, c, f
} * g;
int h;
struct i k;
struct i {
a j
} l(struct i *m) {
*(volatile *)&((g)m->j)->f;
}
n() {
k.j = &h;
l(&k);
}
$ gcc-trunk -w -O1 mutant.c
during GIMPLE pass: copyprop
mutant.c: In function ‘n’:
mutant.c:66:1: internal compiler error: in maybe_canonicalize_mem_ref_addr, at
gimple-fold.c:5976
66 | n() {
| ^
0x6def4a maybe_canonicalize_mem_ref_addr
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/gimple-fold.c:5976
0xc1f18a fold_stmt_1
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/gimple-fold.c:6085
0x10db4c6 substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/tree-ssa-propagate.c:853
0x194d647 dom_walker::walk(basic_block_def*)
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/domwalk.c:309
0x10da869 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/tree-ssa-propagate.c:987
0x104726a fini_copy_prop
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/tree-ssa-copy.c:566
0x104726a execute_copy_prop
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/tree-ssa-copy.c:619
0x104726a execute
/tmp/tmp.66z1mEqhUB-gcc-builder/gcc/gcc/tree-ssa-copy.c:649
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.
