Properly set up the DeclContext for parameters of implicit deduction guides;
this is needed for deferred instantiation of default arguments.
llvm-svn: 295379
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 5470017..4c5f3be 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -1677,6 +1677,9 @@
bool Explicit, TypeSourceInfo *TInfo,
SourceLocation LocStart, SourceLocation Loc,
SourceLocation LocEnd) {
+ ArrayRef<ParmVarDecl *> Params =
+ TInfo->getTypeLoc().castAs<FunctionProtoTypeLoc>().getParams();
+
// Build the implicit deduction guide template.
auto *Guide = FunctionDecl::Create(SemaRef.Context, DC, LocStart, Loc,
DeductionGuideName, TInfo->getType(),
@@ -1685,8 +1688,10 @@
if (Explicit)
Guide->setExplicitSpecified();
Guide->setRangeEnd(LocEnd);
- Guide->setParams(
- TInfo->getTypeLoc().castAs<FunctionProtoTypeLoc>().getParams());
+ Guide->setParams(Params);
+
+ for (auto *Param : Params)
+ Param->setDeclContext(Guide);
auto *GuideTemplate = FunctionTemplateDecl::Create(
SemaRef.Context, DC, Loc, DeductionGuideName, TemplateParams, Guide);