[Modules] Fix crash in Preprocessor::getLastMacroWithSpelling().
Macro names that got undefined inside a module may not have their MacroInfo set.
llvm-svn: 231251
diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index b2a6d93..51a038a 100644
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -321,11 +321,11 @@
StringRef BestSpelling;
for (Preprocessor::macro_iterator I = macro_begin(), E = macro_end();
I != E; ++I) {
- if (!I->second->getMacroInfo()->isObjectLike())
- continue;
const MacroDirective::DefInfo
Def = I->second->findDirectiveAtLoc(Loc, SourceMgr);
- if (!Def)
+ if (!Def || !Def.getMacroInfo())
+ continue;
+ if (!Def.getMacroInfo()->isObjectLike())
continue;
if (!MacroDefinitionEquals(Def.getMacroInfo(), Tokens))
continue;