gcc/testsuite/gcc.dg/Walloca-larger-than-4.c

   1 /* PR middle-end/100425 - missing -Walloca-larger-than with -O0
   2    { dg-do compile }
   3    { dg-options "-O0 -Wall -Walloca-larger-than=128" }
   4    { dg-require-effective-target alloca } */
   5
   6 typedef __SIZE_TYPE__ size_t;
   7
   8 void* alloca (size_t);
   9
  10 void sink (void*);
  11
  12 void warn_alloca_too_large (void)
  13 {
  14   sink (alloca (1));
  15   sink (alloca (128));
  16   sink (alloca (129));        // { dg-warning "\\\[-Walloca-larger-than" }
  17   sink (alloca (128 + 2));    // { dg-warning "\\\[-Walloca-larger-than" }
  18   sink (alloca (1024));       // { dg-warning "\\\[-Walloca-larger-than" }
  19 }