Add a hack to work around the lack of proper type-source info in a pack expansion TypeLoc

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122367 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/AST/TemplateBase.cpp b/lib/AST/TemplateBase.cpp
index fd1146c084..bfc834f090 100644
--- a/lib/AST/TemplateBase.cpp
+++ b/lib/AST/TemplateBase.cpp
@@ -295,8 +295,15 @@ TemplateArgumentLoc::getPackExpansionPattern(SourceLocation &Ellipsis,
   
   switch (Argument.getKind()) {
   case TemplateArgument::Type: {
+    // FIXME: We shouldn't ever have to worry about missing
+    // type-source info!
+    TypeSourceInfo *ExpansionTSInfo = getTypeSourceInfo();
+    if (!ExpansionTSInfo)
+      ExpansionTSInfo = Context.getTrivialTypeSourceInfo(
+                                                     getArgument().getAsType(),
+                                                         Ellipsis);
     PackExpansionTypeLoc Expansion
-      = cast<PackExpansionTypeLoc>(getTypeSourceInfo()->getTypeLoc());
+      = cast<PackExpansionTypeLoc>(ExpansionTSInfo->getTypeLoc());
     Ellipsis = Expansion.getEllipsisLoc();
     
     TypeLoc Pattern = Expansion.getPatternLoc();