1 // RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t1-so.so 2 // RUN: %clangxx_cfi_dso %s -o %t1 %t1-so.so 3 // RUN: %t1 2>&1 | FileCheck --check-prefix=CFI %s 4 5 // RUN: %clangxx_cfi_dso -DB32 -DSHARED_LIB %s -fPIC -shared -o %t2-so.so 6 // RUN: %clangxx_cfi_dso -DB32 %s -o %t2 %t2-so.so 7 // RUN: %t2 2>&1 | FileCheck --check-prefix=CFI %s 8 9 // RUN: %clangxx_cfi_dso -DB64 -DSHARED_LIB %s -fPIC -shared -o %t3-so.so 10 // RUN: %clangxx_cfi_dso -DB64 %s -o %t3 %t3-so.so 11 // RUN: %t3 2>&1 | FileCheck --check-prefix=CFI %s 12 13 // RUN: %clangxx_cfi_dso -DBM -DSHARED_LIB %s -fPIC -shared -o %t4-so.so 14 // RUN: %clangxx_cfi_dso -DBM %s -o %t4 %t4-so.so 15 // RUN: %t4 2>&1 | FileCheck --check-prefix=CFI %s 16 17 // RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %t5-so.so 18 // RUN: %clangxx -DBM %s -o %t5 %t5-so.so 19 // RUN: %t5 2>&1 | FileCheck --check-prefix=NCFI %s 20 // RUN: %t5 x 2>&1 | FileCheck --check-prefix=NCFI %s 21 22 // Tests that the CFI mechanism crashes the program when making a virtual call 23 // to an object of the wrong class but with a compatible vtable, by casting a 24 // pointer to such an object and attempting to make a call through it. 25 26 // REQUIRES: cxxabi 27 28 #include <stdio.h> 29 #include <string.h> 30 31 struct A { 32 virtual void f(); 33 }; 34 35 A *create_B(); 36 37 #ifdef SHARED_LIB 38 39 #include "../utils.h" 40 struct B : public A { 41 virtual void f(); 42 }; 43 void B::f() {} 44 45 A *create_B() { 46 create_derivers<B>(); 47 return new B(); 48 } 49 50 #else 51 52 void A::f() {} 53 54 int main(int argc, char *argv[]) { 55 A *a = create_B(); 56 57 // CFI: =1= 58 // NCFI: =1= 59 fprintf(stderr, "=1=\n"); 60 a->f(); // OK 61 // CFI: =2= 62 // NCFI: =2= 63 fprintf(stderr, "=2=\n"); 64 } 65 #endif 66
