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

   1 /* { dg-do run } */
   2 /* { dg-options "-fsanitize=signed-integer-overflow -Wno-unused-variable" } */
   3 /* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
   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_MAX;
  16   volatile int i = 1;
  17   volatile int k = j + i;
  18   k = i + j;
  19   j++;
  20   j = INT_MAX - 100;
  21   j += (1 << 10);
  22
  23   j = INT_MIN;
  24   i = -1;
  25   k = i + j;
  26   k = j + i;
  27   j = INT_MIN + 100;
  28   j += -(1 << 10);
  29
  30   volatile long int m = LONG_MAX;
  31   volatile long int n = 1;
  32   volatile long int o = m + n;
  33   o = n + m;
  34   m++;
  35   m = LONG_MAX - 100;
  36   m += (1 << 10);
  37
  38   m = LONG_MIN;
  39   n = -1;
  40   o = m + n;
  41   o = n + m;
  42   m = LONG_MIN + 100;
  43   m += -(1 << 10);
  44
  45   return 0;
  46 }
  47
  48 /* { dg-output "signed integer overflow: 2147483647 \\+ 1 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  49 /* { dg-output "\[^\n\r]*signed integer overflow: 1 \\+ 2147483647 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  50 /* { dg-output "\[^\n\r]*signed integer overflow: 2147483647 \\+ 1 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  51 /* { dg-output "\[^\n\r]*signed integer overflow: 2147483547 \\+ 1024 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  52 /* { dg-output "\[^\n\r]*signed integer overflow: -1 \\+ -2147483648 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  53 /* { dg-output "\[^\n\r]*signed integer overflow: -2147483648 \\+ -1 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  54 /* { dg-output "\[^\n\r]*signed integer overflow: -2147483548 \\+ -1024 cannot be represented in type 'int'(\n|\r\n|\r)" } */
  55 /* { dg-output "\[^\n\r]*signed integer overflow: \[^\n\r]* \\+ 1 cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  56 /* { dg-output "\[^\n\r]*signed integer overflow: 1 \\+ \[^\n\r]* cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  57 /* { dg-output "\[^\n\r]*signed integer overflow: \[^\n\r]* \\+ 1 cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  58 /* { dg-output "\[^\n\r]*signed integer overflow: \[^\n\r]* \\+ 1024 cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  59 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* \\+ -1 cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  60 /* { dg-output "\[^\n\r]*signed integer overflow: -1 \\+ -\[^\n\r]* cannot be represented in type 'long int'(\n|\r\n|\r)" } */
  61 /* { dg-output "\[^\n\r]*signed integer overflow: -\[^\n\r]* \\+ -1024 cannot be represented in type 'long int'" } */