1 // RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=RECOVER
2 // RUN: %clangxx -fsanitize=unsigned-integer-overflow -fno-sanitize-recover=all -fsanitize-recover=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=RECOVER
3 // RUN: %env_ubsan_opts=silence_unsigned_overflow=1 %run %t 2>&1 | FileCheck %s --check-prefix=SILENT-RECOVER --allow-empty
4 // RUN: %clangxx -fsanitize=unsigned-integer-overflow -fno-sanitize-recover=unsigned-integer-overflow %s -o %t
5 // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=ABORT
6 // RUN: %env_ubsan_opts=silence_unsigned_overflow=1 not %run %t 2>&1 | FileCheck %s --check-prefix=ABORT
7
8 #include <stdint.h>
9
main()10 int main() {
11 // These promote to 'int'.
12 (void)(uint8_t(0xff) + uint8_t(0xff));
13 (void)(uint16_t(0xf0fff) + uint16_t(0x0fff));
14 // RECOVER-NOT: runtime error
15 // ABORT-NOT: runtime error
16
17 uint32_t k = 0x87654321;
18 k += 0xedcba987;
19 // RECOVER: no-recover.cpp:[[@LINE-1]]:5: runtime error: unsigned integer overflow: 2271560481 + 3989547399 cannot be represented in type 'unsigned int'
20 // ABORT: no-recover.cpp:[[@LINE-2]]:5: runtime error: unsigned integer overflow: 2271560481 + 3989547399 cannot be represented in type 'unsigned int'
21
22 (void)(uint64_t(10000000000000000000ull) + uint64_t(9000000000000000000ull));
23 // RECOVER: 10000000000000000000 + 9000000000000000000 cannot be represented in type 'unsigned {{long( long)?}}'
24 // SILENT-RECOVER-NOT: runtime error
25 // ABORT-NOT: runtime error
26 }
27