File: pr79538.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (22 lines) | stat: -rw-r--r-- 579 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
 
/* PR middle-end/79538 - missing -Wformat-overflow with %s and non-member array arguments
   { dg-do compile }
   { dg-options "-O2 -Wformat-overflow" } */

char a3[3];
char a4[4];
char d[3];

void g (int i)
{
  const char *s = i < 0 ? a3 : a4;
  __builtin_sprintf (d, "%s", s);      /* { dg-warning ".__builtin_sprintf. may write a terminating nul past the end of the destination" } */
  return;
}

void f ()
{
  char des[3];
  char src[] = "abcd";
  __builtin_sprintf (des, "%s", src); /* { dg-warning "directive writing up to 4 bytes into a region of size 3" } */
  return;
}