compiler-rt/test/hwasan/TestCases/use-after-scope-inlined.cpp

   1 // This is the ASAN test of the same name ported to HWAsan.
   2
   3 // Test with "-O2" only to make sure inlining (leading to use-after-scope)
   4 // happens. "always_inline" is not enough, as Clang doesn't emit
   5 // llvm.lifetime intrinsics at -O0.
   6 //
   7 // RUN: %clangxx_hwasan -O2 %s -o %t && \
   8 // RUN:     not %run %t 2>&1 | FileCheck %s
   9
  10 // REQUIRES: aarch64-target-arch || riscv64-target-arch
  11
  12 int *arr;
  13 __attribute__((always_inline)) void inlined(int arg) {
  14   int x[5];
  15   for (int i = 0; i < arg; i++)
  16     x[i] = i;
  17   arr = x;
  18 }
  19
  20 int main(int argc, char *argv[]) {
  21   inlined(argc);
  22   return arr[argc - 1]; // BOOM
  23   // CHECK: ERROR: HWAddressSanitizer: tag-mismatch
  24   // CHECK: Cause: stack tag-mismatch
  25 }