File: constexpr-value2.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 (19 lines) | stat: -rw-r--r-- 519 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
 
// { dg-do compile { target c++11 } }

template<class T>
constexpr T value_init() { return T(); }

template<class T>
constexpr inline T bar(T x) { return x; }

union EmptyUnion {};
union Union1 { int i; };
union Union3 { double d; int i; char* c; };

constexpr auto u1 = value_init<EmptyUnion>();
constexpr auto u2 = value_init<Union1>();
constexpr auto u3 = value_init<Union3>();
constexpr auto u4 = bar(EmptyUnion{});
constexpr auto u5 = bar(Union1{});
constexpr auto u6 = bar(Union3{});
constexpr auto u7 = bar(u1);