1 // RUN: %clang -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=INC %s
2 // RUN: %clang -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=INC %s
3 // RUN: %clang -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=DEC %s
4 // RUN: %clang -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=DEC %s
5
6 #include <stdint.h>
7
main()8 int main() {
9 unsigned n = 0xfffffffd;
10 n++;
11 n++;
12 unsigned m = 0;
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'
15 OP;
16 }
17