File: Wshift-overflow-5.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 (10 lines) | stat: -rw-r--r-- 554 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
 
/* PR c++/55095 */
/* { dg-do compile { target int32 } } */
/* { dg-options "-O -Wshift-overflow=2" } */

#define INTM1 (sizeof (int) * __CHAR_BIT__ - 1)
#define LLONGM1 (sizeof (long long) * __CHAR_BIT__ - 1)

int i1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" "" { target { c || c++11_down } } } */
unsigned u1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" "" { target { c || c++11_down } } } */
long long int l1 = 1LL << LLONGM1; /* { dg-warning "requires 65 bits to represent" "" { target { c || c++11_down } } } */