1 files changed, 16 insertions, 0 deletions
diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 3723c868004..bfcf7926861 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -3356,6 +3356,22 @@ SourceRange FunctionDecl::getReturnTypeSourceRange() const {
   return RTRange;
 }
 
+SourceRange FunctionDecl::getParametersSourceRange() const {
+  unsigned NP = getNumParams();
+  SourceLocation EllipsisLoc = getEllipsisLoc();
+
+  if (NP == 0 && EllipsisLoc.isInvalid())
+    return SourceRange();
+
+  SourceLocation Begin =
+      NP > 0 ? ParamInfo[0]->getSourceRange().getBegin() : EllipsisLoc;
+  SourceLocation End = EllipsisLoc.isValid()
+                           ? EllipsisLoc
+                           : ParamInfo[NP - 1]->getSourceRange().getEnd();
+
+  return SourceRange(Begin, End);
+}
+
 SourceRange FunctionDecl::getExceptionSpecSourceRange() const {
   FunctionTypeLoc FTL = getFunctionTypeLoc();
   return FTL ? FTL.getExceptionSpecRange() : SourceRange();