[modules] If a module #includes a modular header that #undef's its macro, it
should not export the macro.
... at least, not unless we have local submodule visibility enabled.
llvm-svn: 236369
diff --git a/clang/test/Modules/Inputs/macro-masking/module.modulemap b/clang/test/Modules/Inputs/macro-masking/module.modulemap
new file mode 100644
index 0000000..63e1014
--- /dev/null
+++ b/clang/test/Modules/Inputs/macro-masking/module.modulemap
@@ -0,0 +1,4 @@
+module X {
+ module A { header "a.h" export * }
+ module B { header "b.h" export * }
+}