http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59637
Bug ID: 59637
Summary: [c++11] ICE with decltype and destructor call in
template
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 "-std=c++11") triggers an
ICE since GCC 4.7.0:
===========================================
template<typename T> void foo(T* p)
{
p->decltype(T{})::~X();
};
===========================================
bug.cc: In function 'void foo(T*)':
bug.cc:3:21: internal compiler error: Segmentation fault
p->decltype(T{})::~X();
^
0xb75baf crash_signal
../../gcc/gcc/toplev.c:336
0x6785d7 contains_struct_check
../../gcc/gcc/tree.h:2820
0x6785d7 cp_parser_unqualified_id
../../gcc/gcc/cp/parser.c:4926
0x68fd73 cp_parser_id_expression
../../gcc/gcc/cp/parser.c:4726
0x6993e8 cp_parser_postfix_dot_deref_expression
../../gcc/gcc/cp/parser.c:6529
0x67e729 cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:6186
0x681698 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:7170
0x68232f cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:7874
0x682821 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:8112
0x6847b4 cp_parser_expression
../../gcc/gcc/cp/parser.c:8274
0x684fec cp_parser_expression
../../gcc/gcc/cp/parser.c:8313
0x684fec cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:9617
0x67a818 cp_parser_statement
../../gcc/gcc/cp/parser.c:9468
0x67b5c9 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:9740
0x67b73e cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:9694
0x68f15b cp_parser_function_body
../../gcc/gcc/cp/parser.c:18610
0x68f15b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:18646
0x6934fe cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:22678
0x694394 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:22590
0x694394 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:16588
Please submit a full bug report, [etc.]
The code was wrongly rejected from GCC 4.3.0 (where decltype was introduced)
until GCC 4.6.4.
