| // RUN: %clang --driver-mode=g++ -fsanitize=vptr %s -O3 -o %t |
| // RUN: %t rT && %t mT && %t fT && %t cT |
| // RUN: %t rU && %t mU && %t fU && %t cU |
| // RUN: %t rS && %t rV && %t oV |
| // RUN: %t mS 2>&1 | FileCheck %s --check-prefix=CHECK-MEMBER --strict-whitespace |
| // RUN: %t fS 2>&1 | FileCheck %s --check-prefix=CHECK-MEMFUN --strict-whitespace |
| // RUN: %t cS 2>&1 | FileCheck %s --check-prefix=CHECK-DOWNCAST --strict-whitespace |
| // RUN: %t mV 2>&1 | FileCheck %s --check-prefix=CHECK-MEMBER --strict-whitespace |
| // RUN: %t fV 2>&1 | FileCheck %s --check-prefix=CHECK-MEMFUN --strict-whitespace |
| // RUN: %t cV 2>&1 | FileCheck %s --check-prefix=CHECK-DOWNCAST --strict-whitespace |
| // RUN: %t oU 2>&1 | FileCheck %s --check-prefix=CHECK-OFFSET --strict-whitespace |
| // RUN: %t m0 2>&1 | FileCheck %s --check-prefix=CHECK-NULL-MEMBER --strict-whitespace |
| |
| // FIXME: This test produces linker errors on Darwin. |
| // XFAIL: darwin |
| |
| struct S { |
| S() : a(0) {} |
| ~S() {} |
| int a; |
| int f() { return 0; } |
| virtual int v() { return 0; } |
| }; |
| |
| struct T : S { |
| T() : b(0) {} |
| int b; |
| int g() { return 0; } |
| virtual int v() { return 1; } |
| }; |
| |
| struct U : S, T { virtual int v() { return 2; } }; |
| |
| int main(int, char **argv) { |
| T t; |
| (void)t.a; |
| (void)t.b; |
| (void)t.f(); |
| (void)t.g(); |
| (void)t.v(); |
| (void)t.S::v(); |
| |
| U u; |
| (void)u.T::a; |
| (void)u.b; |
| (void)u.T::f(); |
| (void)u.g(); |
| (void)u.v(); |
| (void)u.T::v(); |
| (void)((T&)u).S::v(); |
| |
| T *p = 0; |
| char Buffer[sizeof(U)] = {}; |
| switch (argv[1][1]) { |
| case '0': |
| p = reinterpret_cast<T*>(Buffer); |
| break; |
| case 'S': |
| p = reinterpret_cast<T*>(new S); |
| break; |
| case 'T': |
| p = new T; |
| break; |
| case 'U': |
| p = new U; |
| break; |
| case 'V': |
| p = reinterpret_cast<T*>(new U); |
| break; |
| } |
| |
| switch (argv[1][0]) { |
| case 'r': |
| // Binding a reference to storage of appropriate size and alignment is OK. |
| {T &r = *p;} |
| break; |
| |
| case 'm': |
| // CHECK-MEMBER: vptr.cpp:[[@LINE+5]]:15: runtime error: member access within address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'T' |
| // CHECK-MEMBER-NEXT: [[PTR]]: note: object is of type [[DYN_TYPE:'S'|'U']] |
| // CHECK-MEMBER-NEXT: {{^ .. .. .. .. .. .. .. .. .. .. .. .. }} |
| // CHECK-MEMBER-NEXT: {{^ \^~~~~~~~~~~(~~~~~~~~~~~~)? *$}} |
| // CHECK-MEMBER-NEXT: {{^ vptr for}} [[DYN_TYPE]] |
| return p->b; |
| |
| // CHECK-NULL-MEMBER: vptr.cpp:[[@LINE-2]]:15: runtime error: member access within address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'T' |
| // CHECK-NULL-MEMBER-NEXT: [[PTR]]: note: object has invalid vptr |
| // CHECK-NULL-MEMBER-NEXT: {{^ .. .. .. .. 00 00 00 00 00 00 00 00 }} |
| // CHECK-NULL-MEMBER-NEXT: {{^ \^~~~~~~~~~~(~~~~~~~~~~~~)? *$}} |
| // CHECK-NULL-MEMBER-NEXT: {{^ invalid vptr}} |
| |
| case 'f': |
| // CHECK-MEMFUN: vptr.cpp:[[@LINE+5]]:12: runtime error: member call on address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'T' |
| // CHECK-MEMFUN-NEXT: [[PTR]]: note: object is of type [[DYN_TYPE:'S'|'U']] |
| // CHECK-MEMFUN-NEXT: {{^ .. .. .. .. .. .. .. .. .. .. .. .. }} |
| // CHECK-MEMFUN-NEXT: {{^ \^~~~~~~~~~~(~~~~~~~~~~~~)? *$}} |
| // CHECK-MEMFUN-NEXT: {{^ vptr for}} [[DYN_TYPE]] |
| return p->g(); |
| |
| case 'o': |
| // CHECK-OFFSET: vptr.cpp:[[@LINE+5]]:12: runtime error: member call on address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'U' |
| // CHECK-OFFSET-NEXT: 0x{{[0-9a-f]*}}: note: object is base class subobject at offset {{8|16}} within object of type [[DYN_TYPE:'U']] |
| // CHECK-OFFSET-NEXT: {{^ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. }} |
| // CHECK-OFFSET-NEXT: {{^ \^ ( ~~~~~~~~~~~~)~~~~~~~~~~~ *$}} |
| // CHECK-OFFSET-NEXT: {{^ ( )?vptr for}} 'T' base class of [[DYN_TYPE]] |
| return reinterpret_cast<U*>(p)->v() - 2; |
| |
| case 'c': |
| // CHECK-DOWNCAST: vptr.cpp:[[@LINE+5]]:5: runtime error: downcast of address [[PTR:0x[0-9a-f]*]] which does not point to an object of type 'T' |
| // CHECK-DOWNCAST-NEXT: [[PTR]]: note: object is of type [[DYN_TYPE:'S'|'U']] |
| // CHECK-DOWNCAST-NEXT: {{^ .. .. .. .. .. .. .. .. .. .. .. .. }} |
| // CHECK-DOWNCAST-NEXT: {{^ \^~~~~~~~~~~(~~~~~~~~~~~~)? *$}} |
| // CHECK-DOWNCAST-NEXT: {{^ vptr for}} [[DYN_TYPE]] |
| static_cast<T*>(reinterpret_cast<S*>(p)); |
| return 0; |
| } |
| } |