================
@@ -3553,6 +3553,47 @@ static unsigned getPackIndexForParam(Sema &S,
llvm_unreachable("parameter index would not be produced from template");
}
+// if `Specialization` is a `CXXConstructorDecl` or `CXXConversionDecl`,
+// we'll try to instantiate and update its explicit specifier after constraint
+// checking.
+static Sema::TemplateDeductionResult instantiateExplicitSpecifierDeferred(
+ Sema &S, FunctionDecl *Specialization,
+ const MultiLevelTemplateArgumentList &SubstArgs,
+ TemplateDeductionInfo &Info, FunctionTemplateDecl *FunctionTemplate,
+ ArrayRef<TemplateArgument> DeducedArgs) {
+ auto GetExplicitSpecifier = [](FunctionDecl *D) {
+ return isa<CXXConstructorDecl>(D)
+ ? cast<CXXConstructorDecl>(D)->getExplicitSpecifier()
+ : cast<CXXConversionDecl>(D)->getExplicitSpecifier();
+ };
+ auto SetExplicitSpecifier = [](FunctionDecl *D, ExplicitSpecifier ES) {
+ isa<CXXConstructorDecl>(D)
+ ? cast<CXXConstructorDecl>(D)->setExplicitSpecifier(ES)
+ : cast<CXXConversionDecl>(D)->setExplicitSpecifier(ES);
+ };
+
+ ExplicitSpecifier ES = GetExplicitSpecifier(Specialization);
+ Expr *const Expr = ES.getExpr();
----------------
erichkeane wrote:
```suggestion
Expr *SpecifierExpr = ES.getExpr();
```
We don't typically use const-pointers in clang, particularly for local
variables. Also, a better name would be appreciated.
https://github.com/llvm/llvm-project/pull/70548
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