================
@@ -11758,6 +11795,40 @@ static void DiagnoseBadDeduction(Sema &S, NamedDecl
*Found, Decl *Templated,
return;
}
+ // Errors in deduction guides from inherited constructors
+ // will present as substitution failures in the mapping
+ // partial specialization, so we show a generic diagnostic
+ // in this case.
+ if (auto *DG = dyn_cast<CXXDeductionGuideDecl>(Templated);
+ DG && DG->getSourceKind() ==
+ CXXDeductionGuideDecl::SourceKind::InheritedConstructor) {
+ CXXDeductionGuideDecl *Source = DG->getSourceDeductionGuide();
+ assert(Source &&
+ "Inherited constructor deduction guides must have a source");
+ QualType DeducedRecordType(
+ cast<ClassTemplateDecl>(DG->getDeducedTemplate())
+ ->getTemplatedDecl()
+ ->getTypeForDecl(),
+ 0);
+ QualType InheritedRecordType(
+ cast<ClassTemplateDecl>(Source->getDeducedTemplate())
+ ->getTemplatedDecl()
+ ->getTypeForDecl(),
+ 0);
----------------
antangelo wrote:
Done
https://github.com/llvm/llvm-project/pull/98788
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