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TimWollaarnaud-lb
TimWolla
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arnaud-lb
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opcache: Do not disable userland error handlers in opcache_compile_file()
The logic to disable userland error handlers existed since the first commit including OPcache in php-src. The reason unfortunately is not explained. No existing tests require that userland error handlers do not trigger in `opcache_compile_file()`. The newly added tests are intended to exercise all possible kinds of edge-cases that might arise and cause issues (e.g. throwing Exceptions, performing a bailout, or loading a different file from within the error handler). They all pass for both `--repeat 1` and `--repeat 2`, as well as with OPcache enabled and without OPcache enabled (in the latter case with the exception of the `opcache_get_status()` verification). The list of cached files at the end of execution also matches my expectations. Therefore it seems that disabling the userland error handler when compiling a file with OPcache is not (or at least no longer) necessary. Fixes #17422.
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‎ext/opcache/ZendAccelerator.c

-4
Original file line numberDiff line numberDiff line change
@@ -1744,7 +1744,6 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
17441744
zend_persistent_script *new_persistent_script;
17451745
uint32_t orig_functions_count, orig_class_count;
17461746
zend_op_array *orig_active_op_array;
1747-
zval orig_user_error_handler;
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zend_op_array *op_array;
17491748
bool do_bailout = false;
17501749
accel_time_t timestamp = 0;
@@ -1812,10 +1811,8 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
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orig_active_op_array = CG(active_op_array);
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orig_functions_count = EG(function_table)->nNumUsed;
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orig_class_count = EG(class_table)->nNumUsed;
1815-
ZVAL_COPY_VALUE(&orig_user_error_handler, &EG(user_error_handler));
18161814

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/* Override them with ours */
1818-
ZVAL_UNDEF(&EG(user_error_handler));
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if (ZCG(accel_directives).record_warnings) {
18201817
zend_begin_record_errors();
18211818
}
@@ -1848,7 +1845,6 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
18481845

18491846
/* Restore originals */
18501847
CG(active_op_array) = orig_active_op_array;
1851-
EG(user_error_handler) = orig_user_error_handler;
18521848
EG(record_errors) = 0;
18531849

18541850
if (!op_array) {

‎ext/opcache/tests/gh17422/001.phpt

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
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--TEST--
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GH-17422 (OPcache bypasses the user-defined error handler for deprecations)
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--INI--
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opcache.enable=1
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opcache.enable_cli=1
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--EXTENSIONS--
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opcache
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--FILE--
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<?php
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require __DIR__ . "/shutdown.inc";
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set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) {
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echo "set_error_handler: {$errstr}", PHP_EOL;
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});
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require __DIR__ . "/warning.inc";
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warning();
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?>
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--EXPECT--
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set_error_handler: "continue" targeting switch is equivalent to "break"
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OK: warning
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array(3) {
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[0]=>
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string(7) "001.php"
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[1]=>
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string(12) "shutdown.inc"
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[2]=>
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string(11) "warning.inc"
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}

‎ext/opcache/tests/gh17422/002.phpt

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
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--TEST--
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GH-17422 (OPcache bypasses the user-defined error handler for deprecations) - Throwing error handler
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--INI--
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opcache.enable=1
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opcache.enable_cli=1
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--EXTENSIONS--
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opcache
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--FILE--
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<?php
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require __DIR__ . "/shutdown.inc";
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set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) {
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throw new \ErrorException($errstr, 0, $errno, $errfile, $errline);
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});
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try {
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require __DIR__ . "/warning.inc";
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} catch (\Exception $e) {
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echo "Caught: ", $e->getMessage(), PHP_EOL;
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}
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warning();
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?>
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--EXPECT--
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Caught: "continue" targeting switch is equivalent to "break"
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OK: warning
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array(3) {
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[0]=>
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string(7) "002.php"
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[1]=>
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string(12) "shutdown.inc"
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[2]=>
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string(11) "warning.inc"
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}

‎ext/opcache/tests/gh17422/003.phpt

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@@ -0,0 +1,30 @@
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--TEST--
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GH-17422 (OPcache bypasses the user-defined error handler for deprecations) - Fatal Error
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--INI--
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opcache.enable=1
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opcache.enable_cli=1
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memory_limit=2M
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--EXTENSIONS--
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opcache
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--FILE--
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<?php
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require __DIR__ . "/shutdown.inc";
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set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) {
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str_repeat('x', 1024 * 1024 * 1024);
16+
});
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18+
require __DIR__ . "/warning.inc";
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warning();
21+
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?>
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--EXPECTF--
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Fatal error: Allowed memory size of 2097152 bytes exhausted %s on line 6
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array(2) {
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[0]=>
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string(7) "003.php"
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[1]=>
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string(12) "shutdown.inc"
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}

‎ext/opcache/tests/gh17422/004.phpt

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
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--TEST--
2+
GH-17422 (OPcache bypasses the user-defined error handler for deprecations) - eval
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--INI--
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opcache.enable=1
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opcache.enable_cli=1
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memory_limit=2M
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--EXTENSIONS--
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opcache
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--FILE--
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<?php
11+
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require __DIR__ . "/shutdown.inc";
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set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) {
15+
eval(
16+
<<<'PHP'
17+
function warning() {
18+
echo "NOK", PHP_EOL;
19+
}
20+
PHP
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);
22+
});
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require __DIR__ . "/warning.inc";
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warning();
27+
28+
?>
29+
--EXPECTF--
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Fatal error: Cannot redeclare function warning() (previously declared in %s(8) : eval()'d code:1) in %swarning.inc on line 2
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array(2) {
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[0]=>
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string(7) "004.php"
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[1]=>
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string(12) "shutdown.inc"
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}

‎ext/opcache/tests/gh17422/005.phpt

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@@ -0,0 +1,34 @@
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--TEST--
2+
GH-17422 (OPcache bypasses the user-defined error handler for deprecations) - require
3+
--INI--
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opcache.enable=1
5+
opcache.enable_cli=1
6+
memory_limit=2M
7+
--EXTENSIONS--
8+
opcache
9+
--FILE--
10+
<?php
11+
12+
require __DIR__ . "/shutdown.inc";
13+
14+
set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) {
15+
require_once __DIR__ . "/dummy.inc";
16+
});
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require __DIR__ . "/warning.inc";
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dummy();
21+
22+
?>
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--EXPECT--
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OK: dummy
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array(4) {
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[0]=>
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string(7) "005.php"
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[1]=>
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string(9) "dummy.inc"
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[2]=>
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string(12) "shutdown.inc"
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[3]=>
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string(11) "warning.inc"
34+
}

‎ext/opcache/tests/gh17422/dummy.inc

+4
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
<?php
2+
function dummy() {
3+
echo "OK: ", __FUNCTION__, PHP_EOL;
4+
}

‎ext/opcache/tests/gh17422/shutdown.inc

+6
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
<?php
2+
register_shutdown_function(static function() {
3+
$scripts = array_map(basename(...), array_keys(opcache_get_status()['scripts'] ?? []));
4+
sort($scripts);
5+
var_dump($scripts);
6+
});

‎ext/opcache/tests/gh17422/warning.inc

+8
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
1+
<?php
2+
function warning() {
3+
switch (1) {
4+
case 1:
5+
echo "OK: ", __FUNCTION__, PHP_EOL;
6+
continue;
7+
}
8+
}

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