Language: PROFILE≥8.3 dim-read Warning still "value of type …" — Zend "on false|true|int|…" (re-#30028, zend_execute.c)

[PurHur]

Category

Language · php-src-strict · scalar dim-read Warning text

Problem

PHP 8.3+ shortened Trying to access array offset on value of type T → Trying to access array offset on T (and for bools, true/false not bool). #30028 fixed the resource case; other scalars still use the pre-8.3 wording under PHP_COMPILER_PROFILE≥8.3.

Probed 2026-08-11 — php:8.4-cli 8.4.24 vs PHP_COMPILER_PROFILE=8.4.

Repro	Zend 8.4.24	VM / JIT
$a=false; var_export($a[0]);	Warning … on false	Warning … on value of type bool
$a=true; …	… on true	… on value of type bool
$a=1; …	… on int	… on value of type int
$a=1.5; …	… on float	… on value of type float
$a=null; …	… on null	… on value of type null

php-src reference

• php/php-src Zend/zend_execute.c — ZEND_FETCH_DIM_R scalar Warning
• Sibling: Language: array offset on resource Errors — Zend Warning "Trying to access array offset on resource" (zend_execute.c) #30028 (resource shortened); closed Language: array offset on non-container types must emit E_WARNING (zend_execute.c) #4867 (original warning)

PHP implementation target

• lib/VM/ErrorReporter.php — arrayOffsetOnNonContainerMessage() / PROFILE≥8.3 branch (same pattern as arrayOffsetOnResourceMessage)
• Pass true/false (not bool) for boolean containers
• JIT helpers that share the message (lib/VM/ScalarDimFetchJitHelper.php etc.)
• PHP-in-PHP; no new runtime/*.c

Repro

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
export PHP_COMPILER_PROFILE=8.4
printf "%s\n" "<?php
\$a=false;
var_export(\$a[0]);
echo PHP_EOL;
" >/tmp/dim_false.php
php -d error_reporting=E_ALL -d display_errors=1 bin/vm.php /tmp/dim_false.php
php -d error_reporting=E_ALL -d display_errors=1 bin/jit.php /tmp/dim_false.php
'

Done when

• PROFILE≥8.3 Warnings match Zend for false/true/int/float/null (VM + JIT)
• PROFILE<8.3 keeps legacy value of type … if that was prior behavior
• Resource path from Language: array offset on resource Errors — Zend Warning "Trying to access array offset on resource" (zend_execute.c) #30028 still on resource
• Compliance .phpt under test/compliance/cases/
• php-src-strict; no php-compiler-strict shortcut

[PurHur]

claim: Worker lane C — starting this run

Pre-claim gates (master @ 36fdfd1):

• bootstrap-inventory: OK 7365/7365 (doc drift noted; check gate in release-readiness ok)
• release-readiness: user_release_ready=no — first fails: helper-runtime-prelink (36 stale, Tan/Tanh stdlib-owned), cold-build, spine-coverage (ClosureRichDisplayName.php), north-star5-fast
• vm-driver-probe + gen0-functional: ok; gen-0 seed stale (420 lowering commits)
• Claiming Language Language: PROFILE≥8.3 dim-read Warning still "value of type …" — Zend "on false|true|int|…" (re-#30028, zend_execute.c) #30053 (lane C, %3==2); Pillar 1 helper/spine owned by stdlib/other PRs

[PurHur]

Merged #30104

Verification (local Docker):

• PHP_COMPILER_PROFILE=8.4 VM + JIT: Trying to access array offset on false|true|int|float|null (no value of type)
• PHP_COMPILER_PROFILE=8.2: legacy on value of type bool|int|…
• PHPUnit: ArrayOffsetScalarWarning30053{VM,JIT}Test, unit ArrayOffsetScalarWarning30053Test + ScalarDimFetchJitHelperTest + ResourceDimFetchTest — OK

PHP-in-PHP: lib/VM/ErrorReporter.php + ScalarDimFetchJitHelper / JIT runtime bridge; no new runtime/*.c.