/* { dg-do compile } */ | |
/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=2" } */ | |
/* Source: Ian Lance Taylor. Dual of no-strict-overflow-6.c. */ | |
/* VRP test. This turns into an infinite loop when using strict | |
overflow semantics. */ | |
int | |
foo () | |
{ | |
int i, bits; | |
for (i = 1, bits = 1; i > 0; i += i) /* { dg-warning "assuming signed overflow does not occur" "correct warning" { xfail *-*-* } } */ | |
++bits; | |
return bits; | |
} |