gcc/testsuite/gcc.dg/cpp/expr-overflow-1.c

   1 /* Test overflow in preprocessor arithmetic.  PR 55715.  */
   2 /* { dg-do preprocess } */
   3 /* { dg-options "-std=c99" } */
   4
   5 #include <stdint.h>
   6
   7 #if -1 - INTMAX_MIN
   8 #endif
   9
  10 #if 0 - INTMAX_MIN /* { dg-warning "overflow" } */
  11 #endif
  12
  13 #if 1 * INTMAX_MIN
  14 #endif
  15
  16 #if -1 * INTMAX_MIN /* { dg-warning "overflow" } */
  17 #endif
  18
  19 #if 0 * INTMAX_MIN
  20 #endif
  21
  22 #if -INTMAX_MIN /* { dg-warning "overflow" } */
  23 #endif
  24
  25 #if +INTMAX_MIN
  26 #endif
  27
  28 #if INTMAX_MIN / 1
  29 #endif
  30
  31 #if INTMAX_MIN / -1 /* { dg-warning "overflow" } */
  32 #endif
  33
  34 #if UINTMAX_MAX * UINTMAX_MAX
  35 #endif
  36
  37 #if UINTMAX_MAX / -1
  38 #endif
  39
  40 #if UINTMAX_MAX + INTMAX_MAX
  41 #endif
  42
  43 #if UINTMAX_MAX - INTMAX_MIN
  44 #endif