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
