Retro68/gcc/gcc/testsuite/c-c++-common/Wshift-overflow-5.c
2017-04-10 13:32:00 +02:00

12 lines
512 B
C

/* PR c++/55095 */
/* { dg-do compile { target int32 } } */
/* { dg-options "-O -Wshift-overflow=2" } */
/* { dg-additional-options "-std=c++11" { target c++ } } */
#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" } */
unsigned u1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" } */
long long int l1 = 1LL << LLONGM1; /* { dg-warning "requires 65 bits to represent" } */