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 | |