wstrict-overflow-15.c

来自「用于进行gcc测试」· C语言 代码 · 共 16 行

/* { dg-do compile } */
/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=4" } */

/* Source: Ian Lance Taylor.  */

int
foo (int j)
{
  int i;
  int sum = 0;

  for (i = 1; i < j; i += i)
    sum += __builtin_abs (i); /* { dg-warning "assuming signed overflow does not occur" "" } */
  return sum;
}