AOT: mb_trim/mb_ltrim/mb_rtrim refuse runtime strings — LogicException (leftover of #5957/#23883, ext/mbstring/mbstring.c)

[PurHur]

Category

bug · AOT · mbstring · leftover of #5957 / #23883

Problem

mb_trim() / mb_ltrim() / mb_rtrim() fold compile-time string literals, then throw at JIT/AOT compile for runtime haystacks:

LogicException: mb_trim() is not lowered for JIT/AOT in this compiler build

Same leftover shape as #34338 (mb_scrub) / #34358 (mb_detect_encoding): NestedJIT runtime path missing.

Repro	Zend 8.4+	AOT (master)
$s = " hi "; echo mb_trim($s);	hi	LogicException at compile

php-src reference

• php/php-src ext/mbstring/mbstring.c — PHP_FUNCTION(mb_trim) / mb_ltrim / mb_rtrim

PHP implementation target

• ext/mbstring/JitMbTrim.php — NestedJIT runtime via helper (peer JitMbScrub)
• ext/mbstring/MbTrimJitHelper.php + lib/JIT/Builtin/MbTrimRuntime.php
• Encoding / $characters stay compile-time literals (NestedJIT array/state constraints)

Repro

./script/docker-exec.sh -- bash -lc 'printf "%s\n" "<?php \$s=\"  hi  \"; echo mb_trim(\$s), PHP_EOL;" > /tmp/t.php; php bin/compile.php -o /tmp/t.bin /tmp/t.php'

Done when

• AOT binary for runtime haystack matches Zend stdout for default UTF-8 trim / ltrim / rtrim
• No new runtime/*.c; NestedJIT PHP helper only
• Targeted unit/AOT test green

[PurHur]

claim: i/o-crypto-text lane — implementing NestedJIT AOT runtime for mb_trim/mb_ltrim/mb_rtrim (peer #34338).

[PurHur]

claim: continuing PR #34388 (rebase onto master + merge this run) — DOM/XML overflow; #32122/#31968 closed.

[PurHur]

claim: implementer-worker-lane-c — lane overflow help: rebasing open PR #34388 onto master (conflict after #34387) and verifying to merge this run. Native lane C (34379%3==2).

[PurHur]

Reopening: merged #34388 NestedJIT leaf used int-param ABI that module-verifies incorrectly / SIGSEGVs / wrong empty output under thin AOT. Follow-up fix on branch agent/ext-io-34379-mb-trim-runtime-aot (scrub-like two-string leaves).