1 // RUN: %clangxx -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck --check-prefix=CHECK-INC %s 2 // RUN: %clangxx -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck --check-prefix=CHECK-INC %s 3 // RUN: %clangxx -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck --check-prefix=CHECK-DEC %s 4 // RUN: %clangxx -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t4 && %run %t4 2>&1 | FileCheck --check-prefix=CHECK-DEC %s 5 6 #include <stdint.h> 7 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
