1 // RUN: %clangxx -fsanitize=pointer-overflow %s -o %t
2 // RUN: %run %t 2 2>&1 | FileCheck %s --implicit-check-not="error:" --check-prefix=ERR2
3 // RUN: %run %t 1 2>&1 | FileCheck %s --implicit-check-not="error:" --check-prefix=ERR1
4 // RUN: %run %t 0 2>&1 | FileCheck %s --implicit-check-not="error:" --check-prefix=SAFE
5 // RUN: %run %t -1 2>&1 | FileCheck %s --implicit-check-not="error:" --check-prefix=SAFE
6 // RUN: %run %t -2 2>&1 | FileCheck %s --implicit-check-not="error:" --check-prefix=SAFE
7 
8 #include <stdio.h>
9 #include <stdint.h>
10 #include <stdlib.h>
11 
12 int main(int argc, char *argv[]) {
13   // SAFE-NOT: runtime error
14   // ERR2: runtime error: pointer index expression with base {{.*}} overflowed to
15   // ERR2: runtime error: pointer index expression with base {{.*}} overflowed to
16   // ERR1: runtime error: applying non-zero offset to non-null pointer 0x{{.*}} produced null pointer
17   // ERR1: runtime error: applying non-zero offset to non-null pointer 0x{{.*}} produced null pointer
18 
19   char *p = (char *)(UINTPTR_MAX);
20 
21   printf("%p\n", p + atoi(argv[1]));
22 
23   char *q = (char *)(UINTPTR_MAX);
24 
25   printf("%p\n", p - (-atoi(argv[1])));
26 
27   return 0;
28 }
29