llvm-project/clang/test/SemaCXX/libstdcxx_is_pod_hack.cpp

// RUN: %clang_cc1 -fsyntax-only %s

template<typename T>
struct __is_pod {
};

__is_pod<int> ipi;
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -fsyntax-only %s`
Introduce an egregious hack to fix PR4828. The problem this change addresses is that we treat __is_pod and __is_empty as keywords in C++, because they are built-in type traits in GCC >= 4.3. However, GNU libstdc++ 4.2 (and possibly earlier versions) define implementation-detail struct templates named __is_pod and __is_empty. This commit solves the problem by recognizing struct __is_pod and struct __is_empty as special token sequences. When one of these token sequences is encountered, the keyword (__is_pod or __is_empty) is implicitly downgraded to an identifier so that parsing can continue. This is an egregious hack, but it has the virtue of "just working" whether someone is using libstdc++ 4.2 or not, without the need for special flags. llvm-svn: 80988 2009-09-04 13:53:02 +08:00
			`template<typename T>`
			`struct __is_pod {`
			`};`

			`__is_pod<int> ipi;`