gcc/testsuite/c-c++-common/ubsan/overflow-mul-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fsanitize=signed-integer-overflow -Wno-unused-variable" } */
   3
   4 #define INT_MAX __INT_MAX__
   5 #define LONG_MAX __LONG_MAX__
   6
   7 int
   8 main (void)
   9 {
  10   volatile int j = INT_MAX;
  11   volatile int i = 2;
  12   volatile int k = j * i;
  13   k = i * j;
  14
  15   volatile long int m = LONG_MAX;
  16   volatile long int n = 2;
  17   volatile long int o = m * n;
  18   o = n * m;
  19
  20   return 0;
  21 }
  22
  23 /* { dg-output "signed integer overflow: 2147483647 \\* 2 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  24 /* { dg-output "\[^\n\r]*signed integer overflow: 2 \\* 2147483647 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  25 /* { dg-output "\[^\n\r]*signed integer overflow: \[^\n\r]* \\* 2 cannot be represented in type 'long int'\[^\n\r]*(\n|\r\n|\r)" } */
  26 /* { dg-output "\[^\n\r]*signed integer overflow: 2 \\* \[^\n\r]* cannot be represented in type 'long int'\[^\n\r]*" } */