Add an explicit derived class of FunctionDecl to model deduction guides rather

than just treating them as FunctionDecls with a funny name.

No functionality change intended.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@295491 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 6887962940..d28354f6e8 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -650,10 +650,11 @@ bool Sema::MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old,
   // FIXME: It's not clear what should happen if multiple declarations of a
   // deduction guide have different explicitness. For now at least we simply
   // reject any case where the explicitness changes.
-  if (New->isDeductionGuide() &&
-      New->isExplicitSpecified() != Old->isExplicitSpecified()) {
+  auto *NewGuide = dyn_cast<CXXDeductionGuideDecl>(New);
+  if (NewGuide && NewGuide->isExplicitSpecified() !=
+                      cast<CXXDeductionGuideDecl>(Old)->isExplicitSpecified()) {
     Diag(New->getLocation(), diag::err_deduction_guide_explicit_mismatch)
-      << New->isExplicitSpecified();
+      << NewGuide->isExplicitSpecified();
     Diag(Old->getLocation(), diag::note_previous_declaration);
   }