[Bug c++/58702] New: [4.9 Regression] ICE with undeclared variable in OpenMP reduction clause
reichelt at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Sat Oct 12 21:08:00 GMT 2013
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58702
Bug ID: 58702
Summary: [4.9 Regression] ICE with undeclared variable in
OpenMP reduction clause
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
The following invalid code snippet (compiled with "-fopenmp") triggers an ICE
on trunk:
=============================================
void foo()
{
x;
#pragma omp parallel for reduction(+:x)
for (int i = 0; i < 10; ++i) ;
}
=============================================
bug.cc: In function 'void foo()':
bug.cc:3:3: error: 'x' was not declared in this scope
x;
^
bug.cc:4:40: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in finish_omp_reduction_clause, at
cp/semantics.c:4966
#pragma omp parallel for reduction(+:x)
^
0xd14f79 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9351
0x6df624 tree_class_check
../../gcc/gcc/tree.h:2797
0x6df624 finish_omp_reduction_clause
../../gcc/gcc/cp/semantics.c:4966
0x6df624 finish_omp_clauses(tree_node*)
../../gcc/gcc/cp/semantics.c:5709
0x634b1e cp_omp_split_clauses
../../gcc/gcc/cp/parser.c:28967
0x66873e cp_parser_omp_for
../../gcc/gcc/cp/parser.c:29079
0x668c4b cp_parser_omp_parallel
../../gcc/gcc/cp/parser.c:29259
0x63f221 cp_parser_omp_construct
../../gcc/gcc/cp/parser.c:30380
0x63f221 cp_parser_pragma
../../gcc/gcc/cp/parser.c:30885
0x64555c cp_parser_statement
../../gcc/gcc/cp/parser.c:9297
0x646342 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:9604
0x646486 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:9558
0x659b0b cp_parser_function_body
../../gcc/gcc/cp/parser.c:18401
0x659b0b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:18437
0x65df0f cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:22444
0x65ece2 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:22365
0x65ece2 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:16412
0x65ff2f cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:11047
0x643860 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:10928
0x66aaae cp_parser_declaration
../../gcc/gcc/cp/parser.c:10825
Please submit a full bug report, [etc.]
The regression was introduced between 2013-10-09 and 2013-10-11.
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