← board

Repro

program idx;
type TDyn = array of Integer;
function MakeDyn(k: Integer): TDyn;
var z: Integer;
begin
  SetLength(Result, k);
  for z := 0 to k - 1 do Result[z] := z;
end;
begin
  WriteLn(Length(MakeDyn(3)));   { 3 — works }
  WriteLn(MakeDyn(3)[2]);        { fpc: 2 — pxx: refused }
end.



pascal26: error: cannot index the result of an array-returning function directly
                 — assign it to a variable first

The diagnostic is honest and pre-existing (it is not the bug-p-ten-constructs work), but it is a refusal of valid Pascal, and the sibling construct on the very next line proves the value is available: Length of the same call already answers correctly, which means the result is materialised in a temporary the intrinsic can measure. The subscript path needs the same temporary — the "lifted temp is an addressable record" move ParseClassRecordSelectors already makes for a record-returning call (feature-pascal-record-constructors) is the shape to copy.

Same family as the already-fixed bug-p-a-call-result-is-refused-as-a-const-open-array-argument: a call RESULT is a first-class array value everywhere except the one path that never learned to lift it.

RESOLVED 2026-08-25 — already fixed; this was a re-filing of the same gap

The repro on this page now prints 3 / 2, matching fpc.

Fixed by dd35abca2 under [[compat-pascal-index-a-function-call-result]], whose seven-row table this is one row of — and by the shape this ticket itself proposed: one materialisation point (ApplyCallResultPtrSuffix) lifts the call result into a hidden dyn-array local, and tmp[i] is then the ordinary variable index. No IR change was needed; the whole gap was that a call node has no SYMBOL for the index path to key on.

3fba47f2b closed the two rows still open after that (High(f) and for x in f). The regression test is test/test_index_a_dynamic_array_call_result.pas, whose .expected is fpc 3.2.2's own output.

Closed as a duplicate rather than worked: it was filed independently on 2026-08-25 by a probe sweep, on the same day the fix landed.

Log