| Peter Collingbourne | 49d29ed | 2013-10-20 21:29:32 +0000 | [diff] [blame^] | 1 | // RUN: %clangxx -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=CHECK-INC %s |
| 2 | // RUN: %clangxx -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=CHECK-INC %s |
| 3 | // RUN: %clangxx -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=CHECK-DEC %s |
| 4 | // RUN: %clangxx -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=CHECK-DEC %s |
| Will Dietz | 80af605 | 2012-11-27 15:01:43 +0000 | [diff] [blame] | 5 | |
| 6 | #include <stdint.h> |
| 7 | |
| 8 | int main() { |
| 9 | unsigned n = 0xfffffffd; |
| 10 | n++; |
| 11 | n++; |
| 12 | unsigned m = 0; |
| Will Dietz | 7cbd7e5 | 2012-12-02 18:43:33 +0000 | [diff] [blame] | 13 | // CHECK-INC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 4294967295 + 1 cannot be represented in type 'unsigned int' |
| 14 | // CHECK-DEC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned int' |
| Will Dietz | 80af605 | 2012-11-27 15:01:43 +0000 | [diff] [blame] | 15 | OP; |
| 16 | } |