https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120844
Bug ID: 120844
Summary: ICE on x86_64-linux-gnu: Segmentation fault during
GIMPLE pass: omplower
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jiangchangwu at smail dot nju.edu.cn
Target Milestone: ---
Compiler Explorer: https://gcc.godbolt.org/z/x1T9a6ejq
*******************************************************************************
gcc version:
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/16.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --disable-multilib --disable-bootstrap
--enable-languages=c,c++ --prefix=/home/software/gcc-trunk --enable-coverage
--disable-werror --enable-checking=yes
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 16.0.0 20250613 (experimental) (GCC)
*******************************************************************************
Program:
$ cat mutant.c
extern int a[];
int b;
void c() {
#pragma omp target parallel for map(a[0])
for (b = 0; b < 0; b++)
a;
}
*******************************************************************************
Command Lines:
$ gcc -fopenmp mutant.c
during GIMPLE pass: omplower
mutant.c: In function 'c':
mutant.c:4:9: internal compiler error: Segmentation fault
4 | #pragma omp target parallel for map(a[0])
| ^~~
0x5554b38 internal_error(char const*, ...)
../../gcc/gcc/diagnostic-global-context.cc:517
0x21651ec crash_signal
../../gcc/gcc/toplev.cc:321
0xec7e7d non_type_check(tree_node*, char const*, int, char const*)
../../gcc/gcc/tree.h:3921
0x1d4d475 fixup_remapped_decl
../../gcc/gcc/omp-low.cc:911
0x1d56686 scan_sharing_clauses
../../gcc/gcc/omp-low.cc:1891
0x1d5a798 scan_omp_parallel
../../gcc/gcc/omp-low.cc:2374
0x1d6854d scan_omp_1_stmt
../../gcc/gcc/omp-low.cc:4177
0x18f6101 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:618
0x18f32bc walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:51
0x18f6367 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:645
0x18f32bc walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:51
0x1d692f5 scan_omp
../../gcc/gcc/omp-low.cc:4322
0x1d619f2 scan_omp_target
../../gcc/gcc/omp-low.cc:3150
0x1d68f9e scan_omp_1_stmt
../../gcc/gcc/omp-low.cc:4268
0x18f6101 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:618
0x18f32bc walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:51
0x18f6367 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:645
0x18f32bc walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gcc/gimple-walk.cc:51
0x1d692f5 scan_omp
../../gcc/gcc/omp-low.cc:4322
0x1dc77ec execute_lower_omp
../../gcc/gcc/omp-low.cc:15067
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
