Implement semantic checking for C++ literal operators.

This now rejects literal operators that don't meet the requirements.
Templates are not yet checked for.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93315 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 43 insertions, 0 deletions

diff --git a/test/SemaCXX/literal-operators.cpp b/test/SemaCXX/literal-operators.cpp
new file mode 100644
index 0000000000..ec585a61da
--- /dev/null
+++ b/test/SemaCXX/literal-operators.cpp
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++0x %s
+
+#include <stddef.h>
+
+struct tag {
+  void operator "" tag_bad (const char *); // expected-error {{literal operator 'operator "" tag_bad' must be in a namespace or global scope}}
+  friend void operator "" tag_good (const char *);
+};
+
+namespace ns { void operator "" ns_good (const char *); }
+
+// Check extern "C++" declarations
+extern "C++" void operator "" extern_good (const char *);
+extern "C++" { void operator "" extern_good (const char *); }
+
+void fn () { void operator "" fn_bad (const char *); } // expected-error {{literal operator 'operator "" fn_bad' must be in a namespace or global scope}}
+
+// One-param declarations (const char * was already checked)
+void operator "" good (char);
+void operator "" good (wchar_t);
+void operator "" good (char16_t);
+void operator "" good (char32_t);
+void operator "" good (unsigned long long);
+void operator "" good (long double);
+
+// Two-param declarations
+void operator "" good (const char *, size_t);
+void operator "" good (const wchar_t *, size_t);
+void operator "" good (const char16_t *, size_t);
+void operator "" good (const char32_t *, size_t);
+
+// Check typedef and array equivalences
+void operator "" good (const char[]);
+typedef const char c;
+void operator "" good (c*);
+
+// Check extra cv-qualifiers
+void operator "" cv_good (volatile const char *, const size_t);
+
+// Template delcaration (not implemented yet)
+// template <char...> void operator "" good ();
+
+// FIXME: Test some invalid decls that might crop up.