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[PDO] Do not register bindColumn() binding after exception - #277

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fix/pdo-bindcolumn-leak-84
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iliaal wants to merge 9 commits into
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fix/pdo-bindcolumn-leak-84

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@iliaal iliaal commented Aug 24, 2026

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When ERRMODE_EXCEPTION is set, really_register_bound_param() raised the implementation error for an unknown column name but kept going and registered the binding in bound_columns anyway, so repeated failing bindColumn() calls with distinct names grew the hash without bound (about 33 MB over 200k calls). The fix aborts registration as soon as an exception is pending after pdo_raise_impl_error(); bindValue() and bindParam() take the is_param path where this mapping block is skipped, so they are unaffected. A new .phpt reproduces the growth before the patch and asserts no leak after.

@iliaal iliaal closed this Aug 24, 2026
@iliaal iliaal reopened this Aug 24, 2026
devnexen and others added 9 commits September 18, 2026 21:01
…ansformation.

Fix php#23730

Importing a stylesheet from a php:function callback freed the stylesheet
libxslt was still applying, and the transformation methods kept using the
stale pointer to save the result. The transformation depth is now tracked
on the object and importStylesheet() throws while it is non-zero.

Close phpGH-23737
… callback.

Fix php#23747

ZipArchive::close() called from a progress or cancel callback ran a
nested zip_close() that failed, then zip_discard() freed the archive
while the outer zip_close() from close() or open() was still using it.
Track the close in progress and throw an Error from close() and open()
meanwhile.

Close phpGH-23749
…luation

Reconstructing the object from a php:function callback freed the context
libxml2 was still evaluating, and php_xpath_eval() wrote back into it once
the evaluation returned. The evaluation depth is now tracked on the object
and __construct() throws while it is non-zero.

Close phpGH-23735
The prompt parser ran as a do-while, so an empty cli.prompt executed
the body on the terminator and scanned past it. Use a while loop and
smart_str_extract(), which returns the interned empty string when
nothing was appended. No regression test: extra unicode warnings from
the over-read depend on heap contents, so a .phpt cannot pin the bug
red-before.

Closes phpGH-23415
init_process_info() memset the pointer parameter instead of the
PROCESS_INFORMATION structure it points at, leaving the struct
uninitialized before CreateProcessW(). Zero it through the pointer.

find_comspec_nt() dereferences *comspec in its cleanup while the
caller only assigns it on success, so a failed SearchPathW() read an
indeterminate value. Initialize the caller's variable to NULL.

set_proc_descriptor_to_blackhole() tested CreateFileA() against NULL,
but CreateFileA() signals failure with INVALID_HANDLE_VALUE, so a
failed open went undetected and an invalid handle was inherited by
the child. Test against INVALID_HANDLE_VALUE.

Closes phpGH-23412
…tructions with callable conversion

Call level counter was broken: ZEND_CALLABLE_CONVERT was forgotten.

Closes phpGH-23777.
The x86 matcher folds v = BINOP(a, b); c = CMP(v, 0); GUARD(c) into
IR_GUARD_JCC_INT, emitting the BINOP, dropping the CMP and branching on
the flags the BINOP left, but it only required the BINOP to precede the
CMP in the IR. Once GCM hoists a loop-invariant BINOP into a dominating
block, the jcc reads flags the intervening code has clobbered and the
guard fires on whatever is in EFLAGS. Require the BINOP to sit in the
guard's block and allow only snapshots between the comparison and the
guard, the way ir_match_fuse_load() pairs ir_in_same_block() with
ir_match_has_mem_deps(). The sibling MEM_BINOP fold already checks the
block, the IF side folds are pinned by full ref adjacency, and
ir_aarch64.dasc has no guard fold.

Mirrors the upstream fix dstogov/ir@51107a3.

Fixes phpGH-23693
Closes phpGH-23711
Under ERRMODE_EXCEPTION, really_register_bound_param() raised the
implementation error for an unknown column name and then registered the
binding anyway, so repeated failing bindColumn() calls with distinct names
grew bound_columns without bound. Abort registration once an exception is
pending; bindValue() and bindParam() take the is_param path and are
unaffected.
@iliaal
iliaal force-pushed the fix/pdo-bindcolumn-leak-84 branch from 4000a16 to 2a3080d Compare September 20, 2026 16:11
@iliaal

iliaal commented Sep 20, 2026

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Promoted upstream as php#23799.

@iliaal iliaal closed this Sep 20, 2026
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4 participants