5 Commits

Author	SHA1	Message	Date
Brent Royal-Gordon	f38474896d	Fix layering of cross-import and clang overlays ... If a clang module declares a cross-import overlay, but it also has a traditional overlay, we want the cross-import overlay to be registered with the SourceFile as sitting atop the traditional overlay. Otherwise module-qualified name lookups will bypass the cross-import overlay. Fixes rdar://62139656.	2020-04-21 23:43:53 -07:00
Brent Royal-Gordon	121fa9a058	Ignore transitive ObjC imports when cross-importing ... This behavior change reduces the chance of unexpected and unwanted cross-imports being performed. Fixes rdar://problem/60554019.	2020-04-05 19:06:59 -07:00
Brent Royal-Gordon	747c50725c	Add a warning about redundant cross-import declarations ... These are mostly harmless, except that they make the two module names synonymous in qualified lookup. A hard error seems too aggressive for something that could easily be caused by uncoordinated changes to two modules, so warn instead.	2020-02-18 11:08:36 -08:00
Brent Royal-Gordon	0ab823801c	Test cross-import overlays	2020-02-18 11:08:36 -08:00
Brent Royal-Gordon	e248f82773	Add support for loading cross-import files	2020-02-18 11:06:12 -08:00