compiler-rt/test/hwasan/TestCases/global.c

   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
  27 int a = 1;
  28 #ifdef USE_NOSANITIZE
  29 __attribute__((no_sanitize("hwaddress"))) int x = 1;
  30 #else // USE_NOSANITIZE
  31 int x = 1;
  32 #endif // USE_NOSANITIZE
  33 int b = 1;
  34
  35 int atoi(const char *);
  36
  37 int 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 }