compare1.c

来自「gcc-you can use this code to learn somet」· C语言 代码 · 共 11 行

/* -Wall is supposed to trigger -Wsign-compare for C++.  PR 10604.
   See also gcc.dg/compare7.c.  */

/* { dg-do compile } */
/* { dg-options "-Wall" } */

int f(unsigned a, int b)
{
  return a < b;  /* { dg-warning "signed and unsigned" } */
}