clang/test/Preprocessor/overflow.c

   1 // RUN: %clang_cc1 -Eonly %s -verify -triple i686-pc-linux-gnu
   2
   3 // Multiply signed overflow
   4 #if 0x7FFFFFFFFFFFFFFF*2 // expected-warning {{overflow}}
   5 #endif
   6
   7 // Multiply unsigned overflow
   8 #if 0xFFFFFFFFFFFFFFFF*2
   9 #endif
  10
  11 // Add signed overflow
  12 #if 0x7FFFFFFFFFFFFFFF+1 // expected-warning {{overflow}}
  13 #endif
  14
  15 // Add unsigned overflow
  16 #if 0xFFFFFFFFFFFFFFFF+1
  17 #endif
  18
  19 // Subtract signed overflow
  20 #if 0x7FFFFFFFFFFFFFFF- -1 // expected-warning {{overflow}}
  21 #endif
  22
  23 // Subtract unsigned overflow
  24 #if 0xFFFFFFFFFFFFFFFF- -1 // expected-warning {{converted from negative value}}
  25 #endif