================
@@ -6371,6 +6376,70 @@ ASTContext::getCanonicalTemplateName(const TemplateName
&Name) const {
canonArgPack, subst->getAssociatedDecl()->getCanonicalDecl(),
subst->getFinal(), subst->getIndex());
}
+ case TemplateName::DeducedTemplate: {
+ assert(IgnoreDeduced == false);
+ DeducedTemplateStorage *DTS = Name.getAsDeducedTemplateName();
+ DefaultArguments DefArgs = DTS->getDefaultArguments();
+ TemplateName Underlying = DTS->getUnderlying();
+
+ bool NonCanonical = false;
+ TemplateName CanonUnderlying =
+ getCanonicalTemplateName(Underlying, /*IgnoreDeduced=*/true);
+ NonCanonical |= CanonUnderlying != Underlying;
+ auto CanonArgs =
+ getCanonicalTemplateArguments(*this, DefArgs.Args, NonCanonical);
+ {
+ unsigned NumArgs = CanonArgs.size() - 1;
+ auto handleParamDefArg = [&](const TemplateArgument &ParamDefArg,
+ unsigned I) {
+ auto CanonParamDefArg = getCanonicalTemplateArgument(ParamDefArg);
+ TemplateArgument &CanonDefArg = CanonArgs[I];
+ if (CanonDefArg.structurallyEquals(CanonParamDefArg))
+ return;
+ if (I == NumArgs)
+ CanonArgs.pop_back();
+ NonCanonical = true;
+ };
+ auto handleParam = [&](auto *TP, int I) -> bool {
+ if (!TP->hasDefaultArgument())
+ return true;
+ handleParamDefArg(TP->getDefaultArgument().getArgument(), I);
+ return false;
+ };
+
+ ArrayRef<NamedDecl *> Params = CanonUnderlying.getAsTemplateDecl()
+ ->getTemplateParameters()
+ ->asArray();
+ assert(CanonArgs.size() <= Params.size());
+ for (int I = NumArgs; I >= 0; --I) {
----------------
mizvekov wrote:
The code is correct, but the variable name is not right. Should have been
`LastArgIndex` or some such.
https://github.com/llvm/llvm-project/pull/94981
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