File: sfinae29.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 (17 lines) | stat: -rw-r--r-- 404 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// PR c++/51047
// { dg-do compile { target c++11 } }

template<typename T> T &&declval();
template<class T> decltype(declval<T>().x) f(T *);
template<class T> char f(T);
struct B1{ int x; };
struct B2{ int x; };
struct D : public B1, B2{};
struct S { int x; };
int main()
{
  S *p = nullptr;
  static_assert(sizeof(f(p)) == sizeof(int), "");
  D *q = nullptr;
  static_assert(sizeof(f(q)) == 1u, "");
}