php-in-php: drop Context ensureFullStandaloneBodies always-on StringRandomBytes — lazy at JitRandomBytes/ArrayRand/SessionCreateId (ext/standard/random.c)

[PurHur]

Category

php-in-php · runtime-shrink · Pillar Trust (#32122 .1 mint class)

Problem

Context::ensureFullStandaloneBodies still eagerly calls StringRandomBytes::implement($this), NestedJIT-linking __compiler_random_bytes on every full standalone init.

Call sites already ensure before lookup:

• ext/standard/JitRandomBytes.php — StringRandomBytes::ensureLinked (php-in-php: drop Type::initialize always-on openssl/hash/json/libcrypt/password/random_bytes ensureLinked — lazy Jit* ABI (peer #34327) #34332)
• lib/JIT/ArrayRandLlvm.php — StringRandomBytes::ensureLinked
• lib/JIT/Builtin/SessionCreateIdRuntime.php — StringRandomBytes::ensureLinked

Leftover Context NestedJIT vs Runtime ABI drift mints random_bytes.1 (#31894 / #32122). Peer ensureMinimal drop already removed RandomBytes from ensureMinimalUserStandaloneBodies (#34578).

php-src reference

• php/php-src ext/standard/random.c — php_random_bytes() / PHP_FUNCTION(random_bytes)

PHP implementation target

• lib/JIT/Context.php — remove StringRandomBytes::implement($this) from ensureFullStandaloneBodies; document lazy call sites
• Keep StringRandomBytes::ensureLinked / implement callable from JitRandomBytes / ArrayRand / SessionCreateId
• No new lib/AOT/runtime/*.c

Repro

./script/aot-smoke.sh
./script/docker-exec.sh -- bash -lc 'php bin/compile.php -o /tmp/rb.bin -r "echo bin2hex(random_bytes(4));" && /tmp/rb.bin'
./script/phpunit.sh --filter ContextFullStandaloneLazyRandomBytesShrinkTest

Done when

• ensureFullStandaloneBodies does not call StringRandomBytes::implement / ensureStandaloneBodies
• AOT random_bytes(4) still produces 8 hex chars (call-site ensureLinked)
• ./script/aot-smoke.sh stays 8/8
• Targeted phpunit shrink guard green
• No new lib/AOT/runtime/*.c

Parent

• Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492 php-in-php · Release v1.1.0: fix cold-build-check compile_failed on hello world (LLVM Module.php line 180; re-#24302) #32122 cold-build .1 mint · peer php-in-php: drop Context ensureMinimalUserStandaloneBodies always-on stdlib NestedJIT batch — lazy Jit* ABI (peer #34566) #34578 / php-in-php: lazy StringJsonEncode/Decode + ScalarDim/StringOffset from ensureFullStandaloneBodies (Context.php) #35065 / php-in-php: lazy Utf8Latin1/RewriteVars/Define/Strspn/FileGetContents/Readfile from ensureFullStandaloneBodies (Context.php) #35089

[PurHur]

claim: php-runtime-migration — drop ensureFull always-on StringRandomBytes::implement (peer #34578 / #35065; north-star #32122/#31968 closed; #35107/#35111 claimed).