1 // RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t-so.so
2 // RUN: %clangxx_cfi_dso %s -o %t %t-so.so && %expect_crash %t 2>&1 | FileCheck %s
3 
4 // RUN: %clangxx_cfi_dso_diag -g -DSHARED_LIB %s -fPIC -shared -o %t2-so.so
5 // RUN: %clangxx_cfi_dso_diag -g %s -o %t2 %t2-so.so && %t2 2>&1 | FileCheck %s --check-prefix=CFI-DIAG
6 
7 #include <stdio.h>
8 
9 #ifdef SHARED_LIB
10 void g();
11 void f() {
12   // CHECK-DIAG: =1=
13   // CHECK: =1=
14   fprintf(stderr, "=1=\n");
15   ((void (*)(void))g)();
16   // CHECK-DIAG: =2=
17   // CHECK: =2=
18   fprintf(stderr, "=2=\n");
19   // CFI-DIAG: runtime error: control flow integrity check for type 'void (int)' failed during indirect function call
20   // CFI-DIAG-NEXT: note: g() defined here
21   ((void (*)(int))g)(42); // UB here
22   // CHECK-DIAG: =3=
23   // CHECK-NOT: =3=
24   fprintf(stderr, "=3=\n");
25 }
26 #else
27 void f();
28 void g() {
29 }
30 
31 int main() {
32   f();
33 }
34 #endif
35