17 lines · cpp
1// RUN: %clangxx -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck --check-prefix=CHECK-INC %s2// RUN: %clangxx -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck --check-prefix=CHECK-INC %s3// RUN: %clangxx -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck --check-prefix=CHECK-DEC %s4// RUN: %clangxx -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t4 && %run %t4 2>&1 | FileCheck --check-prefix=CHECK-DEC %s5 6#include <stdint.h>7 8int 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