File: initlist-array17.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A12.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 959,712 kB
  • sloc: cpp: 3,275,382; ansic: 2,061,766; ada: 840,956; f90: 208,513; makefile: 76,132; asm: 73,433; xml: 50,448; exp: 34,146; sh: 32,436; objc: 15,637; fortran: 14,012; python: 11,991; pascal: 6,787; awk: 4,779; perl: 3,054; yacc: 338; ml: 285; lex: 201; haskell: 122
file content (37 lines) | stat: -rw-r--r-- 668 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// PR c++/93259
// { dg-do compile { target c++11 } }

template <class T, class U> struct is_same;
template <class T> struct is_same<T,T> { };

using Array = int[];

template <typename ...Ts>
void bar1(Ts ...)
{
  auto && array = Array{ 1, 2, 3 };

  is_same<int (&&)[3], decltype(array)>{}; // this fails, deduces array as int (&&) []
}

template <typename T>
void bar2()
{
  auto && array = Array{ 1, 2, 3 };

  is_same<int (&&)[3], decltype(array)>{};  // this fails, deduces array as int (&&) []
}

void bar3()
{
  auto && array = Array{ 1, 2, 3 };

  is_same<int (&&)[3], decltype(array)>{}; // OK
}

int main()
{
  bar1<int>(1, 2, 3);
  bar2<int>();
  bar3();
}