http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57196
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
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CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com>
2013-05-07 20:52:28 UTC ---
Here a more simplified version that reproduces the problem:
//---------------------------------------
#include <initializer_list>
template<class T>
struct set {
set() = default;
set(std::initializer_list<T>){}
};
struct string {
string(const char*){}
~string(){}
};
typedef decltype(sizeof(0)) size_t;
template <size_t> struct EqHelper { };
int IsNullLiteralHelper(...);
void Fn() {
EqHelper<sizeof IsNullLiteralHelper(set<int>{1})> eq1; // ok
EqHelper<sizeof IsNullLiteralHelper(set<string>())> eq2; // ok
EqHelper<sizeof IsNullLiteralHelper(set<string>{"foo"})> eq3; // error
}
//---------------------------------------
It seems to be relevant that string has a non-trivial destructor and that set
has an initializer-list constructor (When e.g. replacing
set(std::initializer_list<T>){} by set(T){} causes the code to be accepted)
