llvm-project/clang/test/Modules/Inputs/redecl-merge-bottom-prefix.h

// A class that is declared in the 'bottom' module, then loaded from
// one of the modules it depends on. It needs to be visible when this
// module is loaded.
@class DeclaredThenLoaded;
[Modules] Cope better with top-level declarations loaded after being declared in the current translation unit <rdar://problem/13189985>. These two related tweaks to keep the information associated with a given identifier correct when the identifier has been given some top-level information (say, a top-level declaration) and more information is then loaded from a module. The first ensures that an identifier that was "interesting" before being loaded from an AST is considered to be different from its on-disk counterpart. Otherwise, we lose such changes when writing the current translation unit as a module. Second, teach the code that injects AST-loaded names into the identifier chain for name lookup to keep the most recent declaration, so that we don't end up confusing our declaration chains by having a different declaration in there. llvm-svn: 174895 2013-02-12 02:16:18 +08:00			`// A class that is declared in the 'bottom' module, then loaded from`
			`// one of the modules it depends on. It needs to be visible when this`
			`// module is loaded.`
			`@class DeclaredThenLoaded;`