1 // RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECKS
2 // RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECKU
3 // RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t2 && %env_ubsan_opts=silence_unsigned_overflow=1 %run %t2 2>&1 | FileCheck %s --check-prefix=CHECKU-SILENT --allow-empty
4 
5 int main() {
6   // CHECKS-NOT: runtime error
7   // CHECKU: negate-overflow.cpp:[[@LINE+3]]:3: runtime error: negation of 2147483648 cannot be represented in type 'unsigned int'
8   // CHECKU-NOT: cast to an unsigned
9   // CHECKU-SILENT-NOT: runtime error
10   -unsigned(-0x7fffffff - 1); // ok
11   // CHECKS: negate-overflow.cpp:[[@LINE+2]]:3: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
12   // CHECKU-NOT: runtime error
13   -(-0x7fffffff - 1);
14 
15   return 0;
16 }
17