File: variadic-init.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (55 lines) | stat: -rw-r--r-- 918 bytes parent folder | download | duplicates (10) 
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
// { dg-do run { target c++11 } }

// PR c++/33510
#define SIZE_FROM_CTOR
extern "C" void abort ();

template<int M, int N> struct pair
{
  int i, j;
  pair () : i (M), j (N) {}
};

template<int... M> struct S
{
  template<int... N> static int *foo ()
  {
#ifdef SIZE_FROM_CTOR
    static int x[] = { (M + N)..., -1 };
#else
    static int x[1 + sizeof... N] = { (M + N)..., -1 };
#endif
    return x;
  }
};

template<typename... M> struct R
{
  template<typename... N> static int *foo ()
  {
#ifdef SIZE_FROM_CTOR
    static int x[] = { (sizeof(M) + sizeof(N))..., -1 };
#else
    static int x[1 + sizeof... N] = { (sizeof(M) + sizeof(N))..., -1 };
#endif
    return x;
  }
};

int *bar ()
{
  return S<0, 1, 2>::foo<0, 1, 2> ();
}

int *baz ()
{
  return R<char, short, int>::foo<float, double, long> ();
}


int main ()
{
  int *p = bar ();
  if (p[0] != 0 || p[1] != 2 || p[2] != 4 || p[3] != -1)
    abort ();
}