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 f() { 11 } 12 #else 13 void f(); 14 int main() { 15 // CHECK-DIAG: =1= 16 // CHECK: =1= 17 fprintf(stderr, "=1=\n"); 18 ((void (*)(void))f)(); 19 // CHECK-DIAG: =2= 20 // CHECK: =2= 21 fprintf(stderr, "=2=\n"); 22 // CFI-DIAG: runtime error: control flow integrity check for type 'void (int)' failed during indirect function call 23 // CFI-DIAG-NEXT: note: f() defined here 24 ((void (*)(int))f)(42); // UB here 25 // CHECK-DIAG: =3= 26 // CHECK-NOT: =3= 27 fprintf(stderr, "=3=\n"); 28 } 29 #endif 30
