Stdlib: str_getcsv() — enum case string operands must TypeError (ext/standard/string.c, php-src-strict)

[PurHur]

Category

stdlib | php-src-strict

Problem

str_getcsv() accepts backed enum case operands for $string (and delimiter/enclosure/escape when enum) and silently coerces via backing string. Zend raises TypeError.

Observed 2026-06-15:

Engine	str_getcsv(E::A) where case A = 'a,b'
Zend PHP 8.2+	TypeError
This compiler VM	array('a','b') (coerced)

php-src reference

• php/php-src ext/standard/string.c — php_str_getcsv(), string arg guards
• Related: Stdlib: strpos()/explode() — enum case operands must TypeError not Error (ext/standard/string.c) #5951 (explode() enum TypeError — same coercion class)

Repro

<?php
enum E: string { case A = 'a,b'; }
try {
    var_export(str_getcsv(E::A));
} catch (TypeError $e) {
    echo 'TypeError: ', $e->getMessage(), "\n";
}

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php -r "enum E: string { case A = \"a,b\"; } try { str_getcsv(E::A); } catch (TypeError \$e) { echo \"TypeError\n\"; }"
php bin/vm.php -r "enum E: string { case A = \"a,b\"; } try { str_getcsv(E::A); } catch (TypeError \$e) { echo \"TypeError\n\"; }"
'

Scope

• ext/standard/str_getcsv.php — VmString::coerceStringBuiltinArg() on all string parameters
• JIT: JitStringBuiltinArg mirrors
• test/compliance/cases/stdlib/str_getcsv_enum_case_typeerror.phpt

Done when

• Repro raises catchable TypeError on VM (php-src-strict)
• JIT/AOT agree when in scope
• ./script/ci-fast.sh --filter str_getcsv_enum green

Related

• Stdlib: strpos()/explode() — enum case operands must TypeError not Error (ext/standard/string.c) #5951 explode enum guards
• Stdlib: fputcsv() fields array with enum case must Error like Zend (ext/standard/file.c) #5898 fputcsv enum fields

[PurHur]

claim: cursor-agent-lane-a — starting this run

[PurHur]

claim released: repro passes on master — str_getcsv(E::A) raises TypeError on VM; compliance str_getcsv_enum_type_error.phpt green. Recommend close.

[PurHur]

Already fixed — closing

Verified green on current master this run (Zend PHP 8.2 vs php bin/vm.php match for the issue repro). Issue body is stale; shared enum / string guards landed earlier.

claim: cursor-agent-lane-a — closing as already fixed (no PR).