llvm-project/clang/test/Modules/Inputs/macros_right_undef.h

#undef TOP_RIGHT_UNDEF

@import macros_top;
#undef TOP_OTHER_DEF_RIGHT_UNDEF
#undef TOP_DEF_RIGHT_UNDEF
Track which particular submodule #undef's a macro, so that the actual #undef only occurs if that submodule is imported. llvm-svn: 165773 2012-10-12 08:16:50 +08:00			`#undef TOP_RIGHT_UNDEF`
If a module A exports a macro M, and a module B imports that macro and #undef's it, importers of B should not see the macro. This is complicated by the fact that A's macro could also be visible through a different path. The rules (as hashed out on cfe-commits) are included as a documentation update in this change. With this, the number of regressions in libc++'s testsuite when modules are enabled drops from 47 to 7. Those remaining 7 are also macro-related, and are due to remaining bugs in this change (in particular, the handling of submodules is imperfect). llvm-svn: 202560 2014-03-01 08:08:04 +08:00
			`@import macros_top;`
			`#undef TOP_OTHER_DEF_RIGHT_UNDEF`
[modules] Weaken an out-of-date assertion: an #undef can have no location if we imported it from a module when performing finalization before writing out an AST file. llvm-svn: 215272 2014-08-09 09:24:07 +08:00			`#undef TOP_DEF_RIGHT_UNDEF`