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[Bug c++/60254] New: [4.7/4.8/4.9 Regression] [c++11] ICE with non-const expression in static_assert
- From: "reichelt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 17 Feb 2014 21:57:54 +0000
- Subject: [Bug c++/60254] New: [4.7/4.8/4.9 Regression] [c++11] ICE with non-const expression in static_assert
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60254
Bug ID: 60254
Summary: [4.7/4.8/4.9 Regression] [c++11] ICE with non-const
expression in static_assert
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
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 triggers an ICE since GCC 4.6.1:
====================================
template<typename T> bool foo(T)
{
int i;
static_assert(foo(i), "Error");
}
====================================
bug.cc: In function 'bool foo(T)':
bug.cc:4:3: error: non-constant condition for static assertion
static_assert(foo(i), "Error");
^
bug.cc:4:3: internal compiler error: unexpected expression 'foo' of kind
overload
0x73e01f cxx_eval_constant_expression
../../gcc/gcc/cp/semantics.c:9787
0x73c801 cxx_eval_call_expression
../../gcc/gcc/cp/semantics.c:8361
0x73df70 cxx_eval_constant_expression
../../gcc/gcc/cp/semantics.c:9484
0x741065 cxx_eval_outermost_constant_expr
../../gcc/gcc/cp/semantics.c:9807
0x749b25 cxx_constant_value
../../gcc/gcc/cp/semantics.c:9892
0x749b25 finish_static_assert(tree_node*, tree_node*, unsigned int, bool)
../../gcc/gcc/cp/semantics.c:6874
0x6b68e0 cp_parser_static_assert
../../gcc/gcc/cp/parser.c:11822
0x6acdd9 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:11082
0x6add21 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:10733
0x6ae36b cp_parser_statement
../../gcc/gcc/cp/parser.c:9467
0x6af159 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:9745
0x6af2c6 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:9699
0x6c349b cp_parser_function_body
../../gcc/gcc/cp/parser.c:18641
0x6c349b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:18677
0x6c77e2 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:22792
0x6c8681 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:22704
0x6c8681 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:16585
0x6c8a1a cp_parser_single_declaration
../../gcc/gcc/cp/parser.c:23113
0x6c8d04 cp_parser_template_declaration_after_export
../../gcc/gcc/cp/parser.c:22915
0x6d40a9 cp_parser_declaration
../../gcc/gcc/cp/parser.c:10947
Please submit a full bug report, [etc.]
A slightly different testcase crashes only on trunk:
====================================
struct A
{
template<typename T> bool foo(T)
{
static_assert(foo(0), "Error");
}
};
====================================
bug.cc: In member function 'bool A::foo(T)':
bug.cc:5:5: error: non-constant condition for static assertion
static_assert(foo(0), "Error");
^
bug.cc:5:5: internal compiler error: in cxx_eval_constant_expression, at
cp/semantics.c:9679
0x73df50 cxx_eval_constant_expression
../../gcc/gcc/cp/semantics.c:9679
0x73c801 cxx_eval_call_expression
../../gcc/gcc/cp/semantics.c:8361
0x73df70 cxx_eval_constant_expression
../../gcc/gcc/cp/semantics.c:9484
0x741065 cxx_eval_outermost_constant_expr
../../gcc/gcc/cp/semantics.c:9807
0x749b25 cxx_constant_value
../../gcc/gcc/cp/semantics.c:9892
0x749b25 finish_static_assert(tree_node*, tree_node*, unsigned int, bool)
../../gcc/gcc/cp/semantics.c:6874
0x6b68e0 cp_parser_static_assert
../../gcc/gcc/cp/parser.c:11822
0x6acdd9 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:11082
0x6add21 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:10733
0x6ae36b cp_parser_statement
../../gcc/gcc/cp/parser.c:9467
0x6af159 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:9745
0x6af2c6 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:9699
0x6c349b cp_parser_function_body
../../gcc/gcc/cp/parser.c:18641
0x6c349b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:18677
0x6c77e2 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:22792
0x6cfae0 cp_parser_late_parsing_for_member
../../gcc/gcc/cp/parser.c:23464
0x6aa05d cp_parser_class_specifier_1
../../gcc/gcc/cp/parser.c:19413
0x6aa05d cp_parser_class_specifier
../../gcc/gcc/cp/parser.c:19437
0x6aa05d cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:14302
0x6c2b40 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:11547
Please submit a full bug report, [etc.]