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comparison gcc/testsuite/g++.dg/cpp0x/temp-extend2.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 // PR c++/92831
2 // { dg-do run { target c++11 } }
3
4 template<typename T> using id = T;
5 struct S { S () { s++; } ~S () { s--; } S (int) { s++; } static int s; };
6 int S::s = 0;
7
8 void
9 bar (bool cond, bool cond2)
10 {
11 if (S::s != (cond ? cond2 ? 7 : 5 : cond2 ? 8 : 9))
12 __builtin_abort ();
13 }
14
15 void
16 foo (bool cond, bool cond2)
17 {
18 int i = 1;
19 // temporary array has same lifetime as a
20 S&& a = id<S[3]>{1, 2, 3}[i];
21 // temporary S has same lifetime as b
22 const S& b = static_cast<const S&>(0);
23 // exactly one of the four temporaries is lifetime-extended
24 S&& c = cond ? cond2 ? id<S[3]>{1, 2, 3}[i] : static_cast<S&&>(0)
25 : cond2 ? id<S[4]>{1, 2, 3, 4}[i] : id<S[5]>{1, 2, 3, 4, 5}[i];
26 bar (cond, cond2);
27 }
28
29 int
30 main ()
31 {
32 foo (true, true);
33 foo (true, false);
34 foo (false, true);
35 foo (false, false);
36 }