File: constexpr-reinterpret1.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A7-2018-q2-5
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 539,188 kB
  • sloc: ansic: 2,739,935; cpp: 848,238; ada: 602,637; makefile: 62,919; asm: 55,635; xml: 46,238; exp: 23,020; sh: 19,616; python: 6,371; pascal: 3,889; awk: 3,278; perl: 2,691; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (35 lines) | stat: -rw-r--r-- 669 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
29
30
31
32
33
34
35
 
// PR c++/56728
// { dg-require-effective-target c++11 }

class B {
public:
  static B instance;
  class Inner
  {
  public:
    class Wuzi
    {
      unsigned int m;
    } m_Class[3];
    unsigned m_Int[4];
  };

  constexpr static Inner & getInner()
  /* I am surprised this is considered a constexpr */
  { return *((Inner *)4); } // { dg-error "reinterpret_cast" "" }
};

B B::instance;

class A
{
public:
  constexpr A(B &bridge, B::Inner &bridge2, unsigned char index)
    : m_Bridge(bridge), m_Wuz(bridge2.m_Class[index])
  {}

  B &m_Bridge;
  B::Inner::Wuzi &m_Wuz;
};
A works{B::instance, B::getInner(), 3};
A crashnkill[1]{{B::instance, B::getInner(), 3}};