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();
f()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();
g()28 void g() {
29 }
30
main()31 int main() {
32 f();
33 }
34 #endif
35