https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85134
Bug ID: 85134
Summary: [8 Regression] ICE with invalid constexpr in 'shared'
OpenMP clause
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code, openmp
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
The following invalid code snippet (compiled with "-fopenmp")
triggers an ICE on trunk.
=======================================
void foo(int i)
{
constexpr int x[i] = {};
#pragma omp parallel shared(x)
;
}
=======================================
bug.cc: In function 'void foo(int)':
bug.cc:3:25: error: 'constexpr' variable 'x' has variably-modified type 'const
int [i]'
constexpr int x[i] = {};
^
bug.cc:5:9: internal compiler error: Segmentation fault
#pragma omp parallel shared(x)
^~~
0xebc6ef crash_signal
../../gcc/gcc/toplev.c:325
0xc61cac omp_add_variable
../../gcc/gcc/gimplify.c:6820
0xc763de gimplify_scan_omp_clauses
../../gcc/gcc/gimplify.c:8355
0xc66155 gimplify_omp_parallel
../../gcc/gcc/gimplify.c:9520
0xc66155 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11907
0xc698a6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6a5cc gimplify_bind_expr
../../gcc/gcc/gimplify.c:1331
0xc676ba gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11635
0xc698a6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6b29a gimplify_body(tree_node*, bool)
../../gcc/gcc/gimplify.c:12635
0xc6b794 gimplify_function_tree(tree_node*)
../../gcc/gcc/gimplify.c:12800
0xaf02b7 cgraph_node::analyze()
../../gcc/gcc/cgraphunit.c:670
0xaf2c53 analyze_functions
../../gcc/gcc/cgraphunit.c:1131
0xaf3a52 symbol_table::finalize_compilation_unit()
../../gcc/gcc/cgraphunit.c:2691
Please submit a full bug report, [etc.]
The regression was introduced between 2018-02-25 and 2018-03-02,
most likely by Jason's fix r258015 for PR84559.
Before the code was wrongly accepted.
