File: Wstrict-aliasing-bogus-placement-new.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 (29 lines) | stat: -rw-r--r-- 415 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
20
21
22
23
24
25
26
27
28
29
 
/* { dg-do compile } */
/* { dg-options "-O2 -Wstrict-aliasing" } */

inline void *operator new (__SIZE_TYPE__, void *__p) throw() { return __p; }

struct Y {
  Y() {}
  int i;
};

struct X {
  X() {}
  void construct(const Y& y)
  {
    new (&m_data[0]) Y(y);
  }
  bool initialized;
  char m_data[sizeof (Y)];
};

void bar(const X&);
void foo(Y& y)
{
  X x;
  x.construct(y);
  x.initialized = true;
  bar(x);
}