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// PR c++/92831
// { dg-do run { target c++11 } }
template<typename T> using id = T;
struct S { S () { s++; } ~S () { s--; } S (int) { s++; } static int s; };
int S::s = 0;
void
bar (bool cond, bool cond2)
{
if (S::s != (cond ? cond2 ? 7 : 5 : cond2 ? 8 : 9))
__builtin_abort ();
}
void
foo (bool cond, bool cond2)
{
int i = 1;
// temporary array has same lifetime as a
S&& a = id<S[3]>{1, 2, 3}[i];
// temporary S has same lifetime as b
const S& b = static_cast<const S&>(0);
// exactly one of the four temporaries is lifetime-extended
S&& c = cond ? cond2 ? id<S[3]>{1, 2, 3}[i] : static_cast<S&&>(0)
: cond2 ? id<S[4]>{1, 2, 3, 4}[i] : id<S[5]>{1, 2, 3, 4, 5}[i];
bar (cond, cond2);
}
int
main ()
{
foo (true, true);
foo (true, false);
foo (false, true);
foo (false, false);
}
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