File: constexpr-diag1.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 (20 lines) | stat: -rw-r--r-- 509 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
// Test that we explain why a template instantiation isn't constexpr
// { dg-do compile { target c++11 } }

template <class T>
struct A
{
  T t;
  constexpr int f() const { return 42; } // { dg-error "enclosing class" "" { target c++11_only } }
};

struct B { B(); operator int(); };

constexpr A<int> ai = { 42 };
constexpr int i = ai.f();

constexpr int b = A<B>().f();	// { dg-error "" }

template <class T>
constexpr int f (T t) { return 42; }
constexpr int x = f(B());	     // { dg-error "non-literal" }