stack-uar-dynamic.c
526 Bytes
// RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s
// Dynamic allocation of stack objects does not affect FP, so the backend should
// still be using FP-relative debug info locations that we can use to find stack
// objects.
__attribute((noinline))
char *buggy(int b) {
char c[64];
char *volatile p = c;
if (b) {
p = __builtin_alloca(64);
p = c;
}
return p;
}
int main() {
char *p = buggy(1);
// CHECK: Potentially referenced stack objects:
// CHECK-NEXT: c in buggy
p[0] = 0;
}