When emitting a "too many arguments to function call..." error, also include a note with a location for the function prototype.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128833 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 9ebc7de84d..55155efa69 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -4385,6 +4385,13 @@ Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn,
         << NumArgsInProto << NumArgs << Fn->getSourceRange()
         << SourceRange(Args[NumArgsInProto]->getLocStart(),
                        Args[NumArgs-1]->getLocEnd());
+
+      // Emit the location of the prototype.
+      if (FDecl && !FDecl->getBuiltinID())
+        Diag(FDecl->getLocStart(),
+             diag::note_typecheck_call_too_many_args)
+             << FDecl;
+      
       // This deletes the extra arguments.
       Call->setNumArgs(Context, NumArgsInProto);
       return true;