File: constexpr-base1.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (28 lines) | stat: -rw-r--r-- 595 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
 
// PR c++/100209
// { dg-do compile { target c++14 } }

template<typename Derived>
struct __a_t
{
  unsigned char A = 0;
  constexpr Derived & SetA(const unsigned char & value) {
    A = value;
    return *static_cast<Derived *>(this);
  }
};

template<typename Derived>
struct __b_t
{
  unsigned char B = 0;
  constexpr Derived & SetB(const unsigned char & value) {
    B = value;
    return *static_cast<Derived *>(this);
  }
};

struct __ab_t : __a_t<__ab_t>, __b_t<__ab_t> { };

constexpr auto AB = __ab_t().SetA(100).SetB(10);
static_assert(AB.A == 100, "");
static_assert(AB.B == 10, "");