ms_struct.cpp
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// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING -Wno-error=incompatible-ms-struct -verify -triple i686-apple-darwin9 -std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING -Wno-error=incompatible-ms-struct -verify -triple armv7-apple-darwin9 -std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_ERROR -verify -triple armv7-apple-darwin9 -std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -DNO_PRAGMA -mms-bitfields -verify -triple armv7-apple-darwin9 -std=c++11 %s
#ifndef NO_PRAGMA
#pragma ms_struct on
#endif
struct A {
unsigned long a:4;
unsigned char b;
};
struct B : public A {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#endif
unsigned long c:16;
int d;
B();
};
static_assert(__builtin_offsetof(B, d) == 12,
"We can't allocate the bitfield into the padding under ms_struct");
// rdar://16178895
struct C {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#endif
virtual void foo();
long long n;
};
static_assert(__builtin_offsetof(C, n) == 8,
"long long field in ms_struct should be 8-byte aligned");
#if !defined(TEST_FOR_ERROR) && !defined(TEST_FOR_WARNING)
// expected-no-diagnostics
#endif