================
@@ -11321,9 +11321,20 @@ Decl
*Sema::ActOnConversionDeclarator(CXXConversionDecl *Conversion) {
<< ClassType << ConvType;
}
- if (FunctionTemplateDecl *ConversionTemplate
- = Conversion->getDescribedFunctionTemplate())
+ if (FunctionTemplateDecl *ConversionTemplate =
+ Conversion->getDescribedFunctionTemplate()) {
+ if (const auto *ConvTypePtr = ConvType->getAs<PointerType>()) {
+ ConvType = ConvTypePtr->getPointeeType();
+ }
+ if (ConvType->isUndeducedAutoType()) {
+ Diag(Conversion->getTypeSpecStartLoc(), diag::err_auto_not_allowed)
+ << getReturnTypeLoc(Conversion).getSourceRange()
+ << llvm::to_underlying(ConvType->getAs<AutoType>()->getKeyword())
+ << /* in declaration of conversion function template= */ 24;
----------------
shafik wrote:
`warn_cconv_unsupported` uses `CallingConventionIgnoredReason` enum to specify
which one.
Not sure if this is something we want to use more often or not.
https://github.com/llvm/llvm-project/pull/78103
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