File: Waddress-2.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 (22 lines) | stat: -rw-r--r-- 466 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
/* PR c/47931 - missing -Waddress warning for comparison with NULL
  { dg-do compile }
  { dg-options "-Waddress" } */

#define NULL ((void *) 0)

int i;

int f0 (void)
{
  return &i != 0;   /* { dg-warning "the address of .i. will never be NULL" } */
}

int f1 (void)
{
  return &i != (void *) 0;   /* { dg-warning "the address of .i. will never be NULL" } */
}

int f2 (void)
{
  return &i != NULL;   /* { dg-warning "the address of .i. will never be NULL" } */
}