================
@@ -6375,12 +6383,16 @@ ExprResult Sema::BuildCXXDefaultInitExpr(SourceLocation
Loc, FieldDecl *Field) {
ImmediateCallVisitor V(getASTContext());
if (!NestedDefaultChecking)
V.TraverseDecl(Field);
- if (V.HasImmediateCalls) {
+ if (V.HasImmediateCalls || InLifetimeExtendingContext) {
ExprEvalContexts.back().DelayedDefaultInitializationContext = {Loc, Field,
CurContext};
ExprEvalContexts.back().IsCurrentlyCheckingDefaultArgumentOrInitializer =
NestedDefaultChecking;
+ // Pass down lifetime extending flag, and collect temporaries in
+ // CreateMaterializeTemporaryExpr when we rewrite the call argument.
+ keepInLifetimeExtendingContext();
+ keepInMaterializeTemporaryObjectContext();
----------------
yronglin wrote:
@cor3ntin I tried this code https://godbolt.org/z/n77v9rMTz , and the
temporaries which in `CXXDefaultInitExpr` has been lifetime extended in AST.
But the LLVM IR unexpected, and the lifetime of the temporaries was not
extended. Could you please guide me as to why this is and whether I have made
some mistake?
https://github.com/llvm/llvm-project/pull/76361
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