================
@@ -5560,6 +5560,27 @@ ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation
CallLoc,
Init, InitializationContext->Context);
}
+static FieldDecl *FindFieldDeclInstantiationPattern(const ASTContext &Ctx,
+ FieldDecl *Field) {
+ if (FieldDecl *Pattern = Ctx.getInstantiatedFromUnnamedFieldDecl(Field))
+ return Pattern;
+ auto *ParentRD = cast<CXXRecordDecl>(Field->getParent());
+ CXXRecordDecl *ClassPattern = ParentRD->getTemplateInstantiationPattern();
+ DeclContext::lookup_result Lookup =
+ ClassPattern->lookup(Field->getDeclName());
+ FieldDecl *Found = nullptr;
+ for (auto *L : Lookup) {
+ if (FieldDecl *Pattern = dyn_cast<FieldDecl>(L)) {
+ assert(!Found && "Duplicated instantiation pattern for field decl");
----------------
erichkeane wrote:
This is probably better as a `llvm::make_filter_range`, or a llvm::find_if,
either with `llvm::IsaPred<FieldDecl>`.
Also makes your "ensure we only find one" a little less odd looking, since you
could do something like:
`assert(++Itr == range.end())` kinda thing.
https://github.com/llvm/llvm-project/pull/114196
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