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// 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;
}
}
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