http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57502
Bug ID: 57502
Summary: Expected error "Declaration doesn't declare anything",
but code compiles fine for user-defined class with
using decltype, but not with built-in types.
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: trivial
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: 0coming.soon at gmail dot com
I expected error for line "decltype(Foo{});" like an error for other two lines,
but compiler doesn't throw it:
$ cat main.cpp
class Foo
{
};
int main()
{
decltype(Foo{}); // compiles
Foo; // fails as expected
decltype(int{}); // fails as expected
return 0;
}
$ g++ -Wall -Wextra -std=c++11 main.cpp
main.cpp: In function ‘int main()’:
main.cpp:9:5: error: declaration does not declare anything [-fpermissive]
Foo; // fails as expected
^
main.cpp:10:5: error: declaration does not declare anything [-fpermissive]
decltype(int{}); // fails as expected
^
gcc version 4.8.0 20130502 (prerelease) (GCC)
