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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73930 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 1b1b4fe..1796626 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -494,7 +494,8 @@
ParamInfo = new (Mem) ParmVarDecl*[NumParams];
memcpy(ParamInfo, NewParamInfo, sizeof(ParmVarDecl*)*NumParams);
- // Update source range.
+ // Update source range. The check below allows us to set EndRangeLoc before
+ // setting the parameters.
if (EndRangeLoc < NewParamInfo[NumParams-1]->getLocEnd())
EndRangeLoc = NewParamInfo[NumParams-1]->getLocEnd();
}