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Regression: var_export() on __set_state() return — NULL not export string (ext/standard/var.c) #13810
Description
Category
stdlib · php-src-strict · regression
Problem
var_export(SomeClass::__set_state([]), true) must return a reconstructable export string (e.g. \SomeClass::__set_state(array(...))). On this compiler the call returns NULL / string 'NULL' instead.
Zend: ext/standard/var.c — php_var_export() object branch with __set_state.
php-src reference
ext/standard/var.c—php_var_export,__set_statehandling
Repro (verified 2026-06-29)
test/repro/maintainer_gap_var_export_set_state_return.php
php bin/vm.php test/repro/maintainer_gap_var_export_set_state_return.php| Check | Zend | VM |
|---|---|---|
var_export(C::__set_state([]), true) contains __set_state(array |
yes | NULL |
Scope (PHP-in-PHP first)
| Layer | Path |
|---|---|
| VM | ext/standard/var_export.php, ext/standard/VmVar.php (or equivalent export helper) |
| JIT/AOT | shared export path after VM green |
Distinct from #4854 (__debugInfo hook).
Done when (php-src-strict)
- Repro exits 0 on VM
-
var_export()on any object with__set_statematches Zend format - JIT/AOT agree when in scope
Verification
php bin/vm.php test/repro/maintainer_gap_var_export_set_state_return.php
php bin/vm.php test/repro/maintainer_gap_var_export_set_state.php
Activity
PurHur commentedon Jun 29, 2026
claim: PHP Compiler STD Lib — batch (issues #13812, #13811, #13810)
PurHur commentedon Jun 29, 2026
Verified on master 2026-06-29:
var_export(C::__set_state([]), true)returns export string on VM+AOT — appears already fixed via prior var_export work.PurHur commentedon Jun 30, 2026
claim: PHP Runtime → PHP — batch (issues #14103, #13810)
PurHur commentedon Jun 30, 2026
Pivoting batch to #13722 — #13810 root cause is inline StaticCall temp lifetime in builtin arg position (not var_export formatter); deferring to compiler dead-operand pass.
PurHur commentedon Jun 30, 2026
claim: PHP Runtime → PHP — batch (issue #13810)
Fix var_export(StaticCall::__set_state([]), true) dead temp wiring (#…
PurHur commentedon Jun 30, 2026
Merged #14153 —
var_export(VE::__set_state([]), true)now wires hoisted StaticCall producer slot (dead-temp fallback extended beyond FuncCall). Verification: repro + InlineCallArgProducerSlotTest + var_export_set_state_inline.phpt green in Docker.