Stdlib: hash_pbkdf2() — enum case operands must TypeError not LogicException (ext/hash/hash_pbkdf2.c, php-src-strict) #5972

Category

stdlib · php-src-strict

Problem

hash_pbkdf2() string parameters ($algo, $password, $salt) must follow php-src TypeError on backed enum case operands (Z_PARAM_STR). Zend rejects enum objects; this compiler throws LogicException with a compiler-build message — wrong exception class and wrong coercion path.

php-src-strict: do not pass backed-enum backing scalars where Zend passes enum case objects to Z_PARAM_STR (rejects with TypeError).

php-src reference

• php/php-src ext/hash/hash_pbkdf2.c — PHP_FUNCTION(hash_pbkdf2) parameter checks
• php/php-src ext/standard/basic_functions.c — shared string arg patterns

Repro

./script/docker-exec.sh -- bash -lc 'php test/repro/maintainer_hash_pbkdf2_enum_typeerror.php'
./script/docker-exec.sh -- bash -lc 'php bin/vm.php test/repro/maintainer_hash_pbkdf2_enum_typeerror.php'

Minimal script (test/repro/maintainer_hash_pbkdf2_enum_typeerror.php):

<?php
enum E: string { case A = 'secret'; }
try {
    hash_pbkdf2('sha256', E::A, 'salt', 1000);
} catch (TypeError $e) {
    echo $e->getMessage(), "\n";
}

Scope (this repo)

PHP-in-PHP: fix in ext/standard/ — do not add hash enum checks to lib/AOT/runtime/hash_crypto.c.

Done when

• Repro throws catchable TypeError on VM with Zend message shape for enum $password
• Enum operands on $algo and $salt also TypeError (not LogicException)
• JIT/AOT compliance case green when required by filter
• ./script/docker-exec.sh -- vendor/bin/phpunit --filter hash_pbkdf2_enum green

Verification

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit --filter hash_pbkdf2_enum'

Related

• Stdlib: hash()/hash_hmac()/md5()/sha1()/crc32() — enum case operands must TypeError (ext/hash, ext/standard) #5780 hash()/md5() enum strict pattern
• php-in-php: hash() / hash_hmac() JIT/AOT — delete hash_crypto.c (~779 lines), lower via VmHashNative #5989 php-in-php hash_crypto.c migration
• North star: Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492