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      1 // RUN: %clang -o %t1 %s
      2 // RUN: %t1 2>&1 | FileCheck --check-prefix=NCFI %s
      3 
      4 // RUN: %clang_cfi -o %t2 %s
      5 // RUN: %expect_crash %t2 2>&1 | FileCheck --check-prefix=CFI %s
      6 
      7 // RUN: %clang_cfi_diag -g -o %t3 %s
      8 // RUN: %t3 2>&1 | FileCheck --check-prefix=CFI-DIAG %s
      9 
     10 #include <stdio.h>
     11 
     12 void f() {
     13 }
     14 
     15 int main() {
     16   // CFI: 1
     17   // NCFI: 1
     18   fprintf(stderr, "1\n");
     19 
     20   // CFI-DIAG: runtime error: control flow integrity check for type 'void (int)' failed during indirect function call
     21   // CFI-DIAG: f defined here
     22   ((void (*)(int))f)(42); // UB here
     23 
     24   // CFI-NOT: 2
     25   // NCFI: 2
     26   fprintf(stderr, "2\n");
     27 }
     28