compiler-rt/test/hwasan/TestCases/stack-oob.c

   1 // RUN: %clang_hwasan_oldrt -DSIZE=2 -O0 %s -o %t && %run %t
   2 // RUN: %clang_hwasan -DSIZE=2 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   3 // RUN: %clang_hwasan_oldrt -DSIZE=15 -O0 %s -o %t && %run %t
   4 // RUN: %clang_hwasan -DSIZE=15 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   5 // RUN: %clang_hwasan_oldrt -DSIZE=16 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   6 // RUN: %clang_hwasan -DSIZE=16 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   7 // RUN: %clang_hwasan -DSIZE=64 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   8 // RUN: %clang_hwasan -DSIZE=0x1000 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   9
  10 // Stack short granules are currently not implemented on x86.
  11 // RISC-V target doesn't support oldrt
  12 // XFAIL: target={{(x86_64|riscv64).*}}
  13
  14 #include <stdlib.h>
  15 #include <sanitizer/hwasan_interface.h>
  16
  17 __attribute__((noinline))
  18 int f() {
  19   char z[SIZE];
  20   char *volatile p = z;
  21   return p[SIZE];
  22 }
  23
  24 int main() {
  25   f();
  26   // CHECK: READ of size 1 at
  27   // CHECK: #0 {{.*}} in f{{.*}}stack-oob.c:[[@LINE-6]]
  28
  29   // CHECK-NOT: Cause: global-overflow
  30   // CHECK: Cause: stack tag-mismatch
  31   // CHECK: is located in stack of threa
  32   // CHECK-NOT: Cause: global-overflow
  33
  34   // CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in f
  35 }