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[Bug c++/58610] New: [4.7/4.8/4.9 Regression] [c++11] ICE with constexpr of class with template constructor
- 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: Thu, 03 Oct 2013 21:29:47 +0000
- Subject: [Bug c++/58610] New: [4.7/4.8/4.9 Regression] [c++11] ICE with constexpr of class with template constructor
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58610
Bug ID: 58610
Summary: [4.7/4.8/4.9 Regression] [c++11] ICE with constexpr of
class with template constructor
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:
=============================
struct A
{
template<typename> A();
};
constexpr A a;
=============================
bug.cc:6:13: error: the type 'const A' of constexpr variable 'a' is not literal
constexpr A a;
^
bug.cc:1:8: note: 'A' is not literal because:
struct A
^
bug.cc:1:8: note: 'A' is not an aggregate, does not have a trivial default
constructor, and has no constexpr constructor that is not a copy or move
constructor
bug.cc:6:13: internal compiler error: tree check: expected function_decl, have
template_decl in explain_non_literal_class, at cp/class.c:5327
constexpr A a;
^
0xcd83ea tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9176
0x5f099c tree_check
../../gcc/gcc/tree.h:2609
0x5f099c explain_non_literal_class(tree_node*)
../../gcc/gcc/cp/class.c:5327
0x6bf46b ensure_literal_type_for_constexpr_object(tree_node*)
../../gcc/gcc/cp/semantics.c:5814
0x5696fb cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:6157
0x65119f cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:16568
0x6518bf cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:10986
0x653740 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:10867
0x65c76e cp_parser_declaration
../../gcc/gcc/cp/parser.c:10764
0x65b4da cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:10650
0x65cda6 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:3939
0x65cda6 c_parse_file()
../../gcc/gcc/cp/parser.c:28900
0x7707e3 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]