[Concepts] Add 'this' context to instantiation of member requires clause

'this' context was missing in instantiation of member requires clause.
llvm · Jan 30, 2020 · 60f5da7 · 60f5da7
1 parent a424ef9
commit 60f5da7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2190,6 +2190,9 @@ Decl *TemplateDeclInstantiator::VisitCXXMethodDecl(
   if (TrailingRequiresClause) {
     EnterExpressionEvaluationContext ConstantEvaluated(
         SemaRef, Sema::ExpressionEvaluationContext::Unevaluated);
+    auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner);
+    Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext,
+                                     D->getMethodQualifiers(), ThisContext);
     ExprResult SubstRC = SemaRef.SubstExpr(TrailingRequiresClause,
                                            TemplateArgs);
     if (SubstRC.isInvalid())