compiler-rt/test/hwasan/TestCases/stack-uar-dynamic.c

   1 // RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s
   2
   3 // Dynamic allocation of stack objects does not affect FP, so the backend should
   4 // still be using FP-relative debug info locations that we can use to find stack
   5 // objects.
   6
   7 // Stack histories are currently not recorded on x86.
   8 // XFAIL: x86_64
   9
  10 __attribute((noinline))
  11 char *buggy(int b) {
  12   char c[64];
  13   char *volatile p = c;
  14   if (b) {
  15     p = __builtin_alloca(64);
  16     p = c;
  17   }
  18   return p;
  19 }
  20
  21 int main() {
  22   char *p = buggy(1);
  23   // CHECK: Potentially referenced stack objects:
  24   // CHECK-NEXT: c in buggy
  25   p[0] = 0;
  26 }