1 // Check that ASan correctly detects SEGV on the zero page.
2 // RUN: %clangxx_asan %s -o %t && not %run %t 2>&1 | FileCheck %s
3 
4 #if __has_feature(ptrauth_calls)
5 #  include <ptrauth.h>
6 #endif
7 
8 typedef void void_f();
main()9 int main() {
10   void_f *func = (void_f *)0x4;
11 #if __has_feature(ptrauth_calls)
12   func = ptrauth_sign_unauthenticated(
13       func, ptrauth_key_function_pointer, 0);
14 #endif
15   func();
16   // x86 reports the SEGV with both address=4 and pc=4.
17   // On PowerPC64 ELFv1, the pointer is taken to be a function-descriptor
18   // pointer out of which three 64-bit quantities are read. This will SEGV, but
19   // the compiler is free to choose the order. As a result, the address is
20   // either 0x4, 0xc or 0x14. The pc is still in main() because it has not
21   // actually made the call when the faulting access occurs.
22   // CHECK: {{AddressSanitizer: (SEGV|access-violation).*(address|pc) 0x0*[4c]}}
23   return 0;
24 }
25