Bug #77335 [NEW]: PHP is preventing SIGALRM from specifying SA_RESTART

From: v-yitam at microsoft dot com Operating system: CentOS 7 or Ubuntu 18.04 PHP version: Irrelevant Package: PCNTL related Bug Type: Bug Bug description:PHP is preventing SIGALRM from specifying SA_RESTART Description: ------------ When signo is SIGALRM, it never gets to the else clause, see this line here, https://github.com/php/php-src/blob/master/ext/pcntl/php_signal.c#L44 Note that even though $restart_syscalls is true by default, it does not help or do anything: bool pcntl_signal ( int $signo , callable|int $handler [, bool $restart_syscalls = TRUE ] ) http://php.net/manual/en/function.pcntl-signal.php For your reference, please check https://www.postgresql.org/message-id/E1UnwKf-0002LU-W4@gemulon.postgresql.org Test script: --------------- You can find the repro for pdo_sqlsrv in https://github.com/Microsoft/msphpsql/issues/885 <?php $pdo = new PDO('sqlsrv:Server=;Database=', '', ''); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); function handleAlarm() { echo "Received SIGALRM!"; pcntl_alarm(2); } pcntl_async_signals(true); pcntl_signal( SIGALRM, 'handleAlarm'); pcntl_alarm(2); while(1) { $testresult = $pdo->query("SELECT * FROM users;"); foreach($testresult as $r) {} echo '.'; } Expected result: ---------------- No exception thrown Actual result: -------------- Exception thrown -- Edit bug report at https://bugs.php.net/bug.php?id=77335&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77335&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77335&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77335&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77335&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77335&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77335&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77335&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77335&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77335&r=support Expected behavior: https://bugs.php.net/fix.php?id=77335&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77335&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77335&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77335&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77335&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77335&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77335&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77335&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77335&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77335&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77335&r=mysqlcfg