File: Waddress-2.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 (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" } */
}