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Stdlib: putenv() invalid assignment syntax — returns false not ValueError (ext/standard/basic_functions.c) #10335
Description
Category
stdlib · php-src-strict
Problem
putenv() with a malformed assignment string (no = name, e.g. "=x") must throw ValueError: putenv(): Argument #1 ($assignment) must have a valid syntax. VM returns false silently.
php-src reference
- php/php-src
ext/standard/basic_functions.c—PHP_FUNCTION(putenv), assignment parse +zend_argument_value_error
Repro (failure today)
test/repro/maintainer_gap_putenv_invalid_syntax.php:
<?php
declare(strict_types=1);
var_export(putenv('=invalid'));
echo "\n";./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php test/repro/maintainer_gap_putenv_invalid_syntax.php 2>&1 | head -2
php bin/vm.php test/repro/maintainer_gap_putenv_invalid_syntax.php 2>&1
'| Runtime | Result |
|---|---|
| Zend PHP 8.2 | ValueError (valid syntax required) |
| VM | false ❌ |
Scope (this repo)
| Path | Work |
|---|---|
ext/standard/putenv.php |
Validate name=value / name forms; throw ValueError on invalid syntax |
ext/standard/getenv.php |
Cross-check paired semantics (#4177 scalar coercion) |
ext/standard/JitPutenv.php |
Mirror at JIT when present |
| Tests | test/compliance/cases/stdlib/putenv_invalid_syntax.phpt |
PHP-in-PHP: validation in ext/standard/; reuse shared builtin arg/error helpers.
Done when
- Repro throws
ValueErroron VM - Valid
putenv('KEY=value')/ unset forms unchanged -
./script/ci-fast.sh --filter putenv_invalid_syntaxgreen
Related
- Stdlib: putenv()/fread() string params — scalar-to-string coercion (ext/standard/basic_functions.c parity) #4177 putenv/getenv coercion · Stdlib: disk_free_space()/disk_total_space()/file stat on missing path — returns NULL not false (ext/standard/filestat.c) #10302 filesystem false vs null family · Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492
Activity
PurHur commentedon Jun 20, 2026
claim: PHP Compiler STD Lib — starting this run
Stdlib: putenv() invalid assignment throws ValueError (#10335) (#10353)
PurHur commentedon Jun 20, 2026
Merged via #10353.
Verification
putenv('=invalid')throwsValueError: putenv(): Argument #1 ($assignment) must have a valid syntaxputenv_invalid_syntax_jit.phptKEY=value/ unset forms unchanged./vendor/bin/phpunit --filter "GetenvJitRuntimeShrinkTest|putenv_invalid_syntax" --exclude-group aot→ OK (10 tests)php bin/compile.php -l test/repro/maintainer_gap_putenv_invalid_syntax.php→ OK (AOT lowering guard linked)Implementation:
VmEnv::assertValidPutenvSyntax()(php-srczif_putenv), mirrored inGetenvJitHelper+JitEnv::emitPutenvSyntaxGuard()for JIT/AOT.Note: full native link/execute for
putenv()remains blocked by a pre-existing standalone IR verify failure on master; AOT fixture deferred until that regression is fixed.