Improve overload-candidate diagnostic for a function template that

failed because the explicitly-specified template arguments did not
match its template parameters, e.g.,

test/SemaTemplate/overload-candidates.cpp:18:8: note: candidate
template
      ignored: invalid explicitly-specified argument for template
      parameter 'I'
  void get(const T&);
       ^
test/SemaTemplate/overload-candidates.cpp:20:8: note: candidate
template
      ignored: invalid explicitly-specified argument for 1st template
      parameter
  void get(const T&);
       ^

llvm-svn: 103344

1 files changed, 4 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaTemplateDeduction.cpp b/clang/lib/Sema/SemaTemplateDeduction.cpp
index 2bb97eba11c..f716ccd6f7f 100644
--- a/clang/lib/Sema/SemaTemplateDeduction.cpp
+++ b/clang/lib/Sema/SemaTemplateDeduction.cpp
@@ -1190,8 +1190,11 @@ Sema::SubstituteExplicitTemplateArguments(
                                 SourceLocation(),
                                 ExplicitTemplateArgs,
                                 true,
-                                Builder) || Trap.hasErrorOccurred())
+                                Builder) || Trap.hasErrorOccurred()) {
+    Info.Param = makeTemplateParameter(TemplateParams->getParam(
+                                                    Builder.structuredSize()));
     return TDK_InvalidExplicitArguments;
+  }
 
   // Form the template argument list from the explicitly-specified
   // template arguments.