================
@@ -6291,9 +6291,19 @@ ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation
CallLoc,
ImmediateCallVisitor V(getASTContext());
if (!NestedDefaultChecking)
V.TraverseDecl(Param);
- if (V.HasImmediateCalls) {
- ExprEvalContexts.back().DelayedDefaultInitializationContext = {
- CallLoc, Param, CurContext};
+
+ // Rewrite the call argument that was created from the corresponding
+ // parameter's default argument.
+ if (V.HasImmediateCalls || IsInLifetimeExtendingContext) {
+ if (V.HasImmediateCalls)
+ ExprEvalContexts.back().DelayedDefaultInitializationContext = {
+ CallLoc, Param, CurContext};
+ // Pass down lifetime extending flag, and collect temporaries in
+ // CreateMaterializeTemporaryExpr when we rewrite the call argument.
+ auto &LastRecord = ExprEvalContexts.back();
+ auto &PrevRecord = ExprEvalContexts[ExprEvalContexts.size() - 2];
+ LastRecord.IsInLifetimeExtendingContext = IsInLifetimeExtendingContext;
+
----------------
yronglin wrote:
Good catch! Yeah, we need do the same thing for `BuildCXXDefaultInitExpr`, I'm
working on it.
https://github.com/llvm/llvm-project/pull/76361
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