================
@@ -1332,6 +1332,54 @@ llvm::DIType *CGDebugInfo::CreateType(const
TemplateSpecializationType *Ty,
auto PP = getPrintingPolicy();
Ty->getTemplateName().print(OS, PP, TemplateName::Qualified::None);
+ SourceLocation Loc = AliasDecl->getLocation();
+
+ if (CGM.getCodeGenOpts().DebugTemplateAlias) {
+ // TemplateSpecializationType doesn't know if its template args are
+ // being substituted into a parameter pack. We can find out if that's
+ // the case now by inspecting the TypeAliasTemplateDecl template
+ // parameters. Insert Ty's template args into SpecArgs, bundling args
+ // passed to a parameter pack into a TemplateArgument::Pack.
+ SmallVector<TemplateArgument> SpecArgs;
+ {
+ ArrayRef SubstArgs = Ty->template_arguments();
+ for (const NamedDecl *P : TD->getTemplateParameters()->asArray()) {
+ if (P->isParameterPack()) {
+ SpecArgs.push_back(TemplateArgument(SubstArgs));
+ break;
+ }
+ // Skip defaulted args.
+ if (SubstArgs.empty()) {
+ // If SubstArgs is now empty (we're taking from it each iteration)
and
+ // this template parameter isn't a pack, then that should mean we're
+ // using default values for the remaining template parameters.
+ break;
----------------
OCHyams wrote:
Ah - this implementation appears to cause an assertion when one of the template
parameters is a dependant type... (working on it)
https://github.com/llvm/llvm-project/pull/87623
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