Make macro dumping robust against a nonexistent macro.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@236285 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index 98f90bb7e2038d78b5d09eb77ab06a5c3e96be0e..fca3f8b97cec9029faeb39e097331023237d325d 100644 (file)
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -207,7 +207,7 @@ void Preprocessor::dumpMacroInfo(const IdentifierInfo *II) {
   llvm::errs() << "MacroState " << State << " " << II->getNameStart();
   if (State && State->isAmbiguous(*this, II))
     llvm::errs() << " ambiguous";
-  if (!State->getOverriddenMacros().empty()) {
+  if (State && !State->getOverriddenMacros().empty()) {
     llvm::errs() << " overrides";
     for (auto *O : State->getOverriddenMacros())
       llvm::errs() << " " << O->getOwningModule()->getFullModuleName();