================
@@ -1965,3 +1965,52 @@ CXXFoldExpr::CXXFoldExpr(QualType T,
UnresolvedLookupExpr *Callee,
SubExprs[SubExpr::RHS] = RHS;
setDependence(computeDependence(this));
}
+
+ResolvedUnexpandedPackExpr::ResolvedUnexpandedPackExpr(SourceLocation BL,
+ QualType QT,
+ unsigned NumExprs)
+ : Expr(ResolvedUnexpandedPackExprClass, QT, VK_PRValue, OK_Ordinary),
+ BeginLoc(BL), NumExprs(NumExprs) {
+ // C++ [temp.dep.expr]p3
+ // An id-expression is type-dependent if it is
+ // - associated by name lookup with a pack
+ setDependence(ExprDependence::TypeValueInstantiation |
+ ExprDependence::UnexpandedPack);
+}
+
+ResolvedUnexpandedPackExpr *
+ResolvedUnexpandedPackExpr::CreateDeserialized(ASTContext &Ctx,
+ unsigned NumExprs) {
+ void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs),
+ alignof(ResolvedUnexpandedPackExpr));
+ return new (Mem)
+ ResolvedUnexpandedPackExpr(SourceLocation(), QualType(), NumExprs);
+}
+
+ResolvedUnexpandedPackExpr *
+ResolvedUnexpandedPackExpr::Create(ASTContext &Ctx, SourceLocation BL,
+ QualType T, unsigned NumExprs) {
+ void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs),
+ alignof(ResolvedUnexpandedPackExpr));
+ ResolvedUnexpandedPackExpr *New =
+ new (Mem) ResolvedUnexpandedPackExpr(BL, T, NumExprs);
+
+ auto Exprs = llvm::MutableArrayRef(New->getExprs(), New->getNumExprs());
+ std::fill(Exprs.begin(), Exprs.end(), nullptr);
+
+ return New;
+}
+
+ResolvedUnexpandedPackExpr *
+ResolvedUnexpandedPackExpr::Create(ASTContext &Ctx, SourceLocation BL,
+ QualType T, ArrayRef<Expr *> Exprs) {
+ auto *New = Create(Ctx, BL, T, Exprs.size());
+ std::copy(Exprs.begin(), Exprs.end(), New->getExprs());
----------------
erichkeane wrote:
IIRC I looked it up at one point and found that std::copy into uninitialized
data (or perhaps std::fill as well), but I cannot for the life of me remember
what it was. Perhaps it is just 'dtor' related stuff (which makes this not
matter for pointers?) but the code I wrote is pointers-only too, so IDK why it
became a bit of my personal cargo-cult.
https://github.com/llvm/llvm-project/pull/121417
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