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

   1 /* { dg-do run } */
   2 /* { dg-options "-fsanitize=signed-integer-overflow -Wno-unused-variable" } */
   3 /* { dg-options "-fsanitize=signed-integer-overflow -Wno-unused-variable -Wno-volatile" { target c++ } } */
   4
   5 #define INT_MAX __INT_MAX__
   6 #define INT_MIN (-__INT_MAX__ - 1)
   7 #define LONG_MAX __LONG_MAX__
   8 #define LONG_MIN (-__LONG_MAX__ - 1L)
   9 #define LLONG_MAX __LONG_LONG_MAX__
  10 #define LLONG_MIN (-__LONG_LONG_MAX__ - 1L)
  11
  12 int
  13 main (void)
  14 {
  15   volatile int j = INT_MIN;
  16   volatile int i = 1;
  17   volatile int k = j - i;
  18   j--;
  19   j = INT_MIN + 100;
  20   j -= (1 << 10);
  21
  22   j = INT_MIN;
  23   i = -1;
  24   k = j - -i;
  25
  26   i = INT_MIN + 1000;
  27   i -= (1 << 20);
  28
  29   volatile long int l = LONG_MIN;
  30   volatile long int m = 1;
  31   volatile long int n = l - m;
  32   l--;
  33   l = LONG_MIN + 100;
  34   l -= (1 << 10);
  35
  36   l = LONG_MIN;
  37   m = -1;
  38   n = l - -m;
  39
  40   m = LONG_MIN + 1000;
  41   m -= (1 << 20);
  42
  43   return 0;
  44 }
  45
  46 /* { dg-output "signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  47 /* { dg-output "\[^\n\r]*signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  48 /* { dg-output "\[^\n\r]*signed integer overflow: -2147483548 - 1024 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  49 /* { dg-output "\[^\n\r]*signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  50 /* { dg-output "\[^\n\r]*signed integer overflow: -2147482648 - 1048576 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  51 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* - 1 cannot be represented in type 'long int'\[^\n\r]*(\n|\r\n|\r)" } */
  52 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* - 1 cannot be represented in type 'long int'\[^\n\r]*(\n|\r\n|\r)" } */
  53 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* - 1024 cannot be represented in type 'long int'\[^\n\r]*(\n|\r\n|\r)" } */
  54 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* - 1 cannot be represented in type 'long int'\[^\n\r]*(\n|\r\n|\r)" } */
  55 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* - 1048576 cannot be represented in type 'long int'" } */