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Stdlib: debug_zval_dump() anonymous class shows internal NUL suffix (ext/standard/var.c) #17450
Description
Category
stdlib · php-src-strict
Problem
debug_zval_dump() on anonymous class objects prints the internal class@anonymous\0<file>:<line>$<id> name instead of Zend's class@anonymous label (same gap as #17444 for var_dump/print_r).
| Repro | Zend 8.2 | VM |
|---|---|---|
debug_zval_dump(new class {}) header |
object(class@anonymous)#N |
object(class@anonymous\0... |
php-src reference
Zend/zend_builtin_functions.c—zif_debug_zval_dumpusesZSTR_CLASS_ANONYMOUSfor anon classes
PHP implementation target
ext/standard/VmDebugZval.php—VmObjectDebugType::fromClassName()on object header
Repro
php -r '$o=new class{}; debug_zval_dump($o);'
php bin/vm.php -r '$o=new class{}; debug_zval_dump($o);'Done when
- VM header matches Zend (no NUL in output)
- Compliance
.phptguard
Activity
PurHur commentedon Jul 8, 2026
claim: cursor-agent-lane-a — starting this run
Stdlib: debug_zval_dump() strip anonymous class NUL suffix (#17450) (#…
PurHur commentedon Jul 8, 2026
Merged via #17451
Fix:
VmDebugZval::dumpObject()now usesVmObjectDebugType::fromClassName()for object headers (same helper as #17444 forvar_dump/print_r).Verification:
php test/repro/maintainer_gap_debug_zval_dump_anonymous_class.php— okphp bin/vm.php test/repro/maintainer_gap_debug_zval_dump_anonymous_class.php— okvendor/bin/phpunit test/compliance/VMTest.php --filter debug_zval_dump_anonymous_class— OK (1 test)Anonymous objects now print
object(class@anonymous)#Non VM, matching Zend.