1// RUN: %clang_hwasan %s -o %t
2// RUN: %run %t 0
3// RUN: not %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK,RSYM %s
4// RUN: not %env_hwasan_opts=symbolize=0 %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK,RNOSYM %s
5// RUN: not %run %t -1 2>&1 | FileCheck --check-prefixes=CHECK,LSYM %s
6// RUN: not %env_hwasan_opts=symbolize=0 %run %t -1 2>&1 | FileCheck --check-prefixes=CHECK,LNOSYM %s
7
8// Test with and without optimizations, with and without PIC, since different
9// backend passes run depending on these flags.
10// RUN: %clang_hwasan -fno-pic %s -o %t
11// RUN: not %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK,RSYM %s
12// RUN: %clang_hwasan -fno-pic -O2 %s -o %t
13// RUN: not %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK,RSYM %s
14// RUN: %clang_hwasan -O2 %s -o %t
15// RUN: not %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK,RSYM %s
16
17// RUN: %clang_hwasan -DUSE_NOSANITIZE %s -o %t && %run %t 0
18// RUN: %clang_hwasan -DUSE_NOSANITIZE %s -o %t && %run %t 1
19// RUN: %clang_hwasan -DUSE_NOSANITIZE %s -o %t -fno-pic && %run %t 1
20// RUN: %clang_hwasan -DUSE_NOSANITIZE %s -o %t -O2 && %run %t 1
21// RUN: %clang_hwasan -DUSE_NOSANITIZE %s -o %t -fno-pic -O2 && %run %t 1
22
23// REQUIRES: pointer-tagging
24
25#include <stdlib.h>
26
27int a = 1;
28#ifdef USE_NOSANITIZE
29__attribute__((no_sanitize("hwaddress"))) int x = 1;
30#else // USE_NOSANITIZE
31int x = 1;
32#endif // USE_NOSANITIZE
33int b = 1;
34
35int atoi(const char *);
36
37int main(int argc, char **argv) {
38 // CHECK: Cause: global-overflow
39 // RSYM: is located 0 bytes after a 4-byte global variable x {{.*}} in {{.*}}global.c.tmp
40 // RNOSYM: is located after a 4-byte global variable in
41 // RNOSYM-NEXT: #0 0x{{.*}} ({{.*}}global.c.tmp+{{.*}})
42 // LSYM: is located 4 bytes before a 4-byte global variable x {{.*}} in {{.*}}global.c.tmp
43 // LNOSYM: is located before a 4-byte global variable in
44 // LNOSYM-NEXT: #0 0x{{.*}} ({{.*}}global.c.tmp+{{.*}})
45 // CHECK-NOT: can not describe
46 (&x)[atoi(argv[1])] = 1;
47}
48

source code of compiler-rt/test/hwasan/TestCases/global.c