https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98199
Bug ID: 98199
Summary: [11 Regression] ICE: Aborted (stack smashing detected)
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
AArch64 GCC ICEs on the following testcase:
struct b {
long a;
short d;
int c;
int f;
int e;
int g;
};
struct h {
int a;
int i;
short j;
struct b k;
signed : 20;
int e;
int g;
} __attribute__((packed));
struct {
short a;
unsigned i;
unsigned k;
struct h d;
const int : 30;
signed e : 20;
signed : 18;
} const l = {1, 6, 0, {}, 0};
int m() { return l.e || 0; }
since r11-5706-g277ff3406d533990e98cf1c2075b9dc9db6fa48a. I can reproduce the
issue on both x86 and aarch64 hosts. To reproduce:
$ aarch64-elf-gcc -c test.c
*** stack smashing detected ***: <unknown> terminated
test.c: In function 'm':
test.c:27:18: internal compiler error: Aborted
27 | int m() { return l.e || 0; }
| ^~~
0xdccf89 crash_signal
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:327
0x9ff4e7 native_encode_initializer(tree_node*, unsigned char*, int, int,
unsigned char*)
/home/alecop01/toolchain/src/gcc/gcc/fold-const.c:8476
0xa7688d fold_ctor_reference(tree_node*, tree_node*, poly_int<2u, unsigned
long> const&, poly_int<2u, unsigned long> const&, tree_node*, unsigned long*)
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:7952
0xa77a77 fold_const_aggregate_ref_1(tree_node*, tree_node* (*)(tree_node*))
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:8057
0xa79816 fold_const_aggregate_ref(tree_node*)
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:8136
0xa7989b maybe_fold_reference
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:334
0xa79cb4 fold_gimple_assign
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:366
0xa7fdec fold_stmt_1
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:6077
0xa81c10 fold_stmt(gimple_stmt_iterator*)
/home/alecop01/toolchain/src/gcc/gcc/gimple-fold.c:6248
0xa9b20e maybe_fold_stmt
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:3295
0xabb0f1 gimplify_modify_expr
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:5979
0xaa9b7e gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:14010
0xaaf1b7 gimplify_stmt(tree_node**, gimple**)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:6862
0xab2cfc gimplify_and_add(tree_node*, gimple**)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:487
0xab2cfc internal_get_tmp_var
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:640
0xab2d7a get_formal_tmp_var(tree_node*, gimple**)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:661
0xaaef47 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:14998
0xaae654 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:14764
0xaae654 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:14764
0xaaa086 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/alecop01/toolchain/src/gcc/gcc/gimplify.c:14113
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.
