| 1 | // RUN: %clangxx -w -fsanitize=signed-integer-overflow,nullability-return,returns-nonnull-attribute -fsanitize-recover=all %s -o %t && %run %t 2>&1 | FileCheck %s |
| 2 | |
| 3 | #include <stdint.h> |
| 4 | #include <stdio.h> |
| 5 | |
| 6 | int *_Nonnull h() { |
| 7 | // CHECK: nullability-return by 0x{{[[:xdigit:]]+$}} |
| 8 | return NULL; |
| 9 | } |
| 10 | |
| 11 | __attribute__((returns_nonnull)) |
| 12 | int *i() { |
| 13 | // CHECK: nonnull-return by 0x{{[[:xdigit:]]+$}} |
| 14 | return NULL; |
| 15 | } |
| 16 | |
| 17 | __attribute__((noinline)) |
| 18 | int f(int x, int y) { |
| 19 | // CHECK: mul-overflow by 0x{{[[:xdigit:]]+$}} |
| 20 | return x * y; |
| 21 | } |
| 22 | |
| 23 | __attribute__((noinline)) |
| 24 | int g(int x, int y) { |
| 25 | // CHECK: mul-overflow by 0x{{[[:xdigit:]]+$}} |
| 26 | return x * (y + 1); |
| 27 | } |
| 28 | |
| 29 | int main() { |
| 30 | h(); |
| 31 | i(); |
| 32 | int x = 2; |
| 33 | for (int i = 0; i < 10; ++i) |
| 34 | x = f(x, y: x); |
| 35 | x = 2; |
| 36 | for (int i = 0; i < 10; ++i) |
| 37 | x = g(x, y: x); |
| 38 | // CHECK-NOT: mul-overflow |
| 39 | } |
| 40 | |