Bug #77163 [NEW]: PDOException not thrown for SELECT FOR UPDATE with ATTR_EMULATE_PREPARES = 0

From: contact at bastiaangrutters dot nl Operating system: Linux PHP version: 7.2.12 Package: PDO MySQL Bug Type: Bug Bug description:PDOException not thrown for SELECT FOR UPDATE with ATTR_EMULATE_PREPARES = 0 Description: ------------ When using PDO MySQL to select rows for update with PDO::ATTR_EMULATE_PREPARES set to false and PDO::ATTR_ERRMODE set to PDO::ERRMODE_EXCEPTION no exception is thrown when the rows are already locked and a timeout occurs. Note: The exception is thrown when PDO::ATTR_EMULATE_PREPARES is not set/set to true or when a parameter is used in the select query. Instructions on reproducing this: Open mysql on cli, and perform queries: CREATE DATABASE testdb; USE testdb; CREATE TABLE test (id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY, value VARCHAR(30) NOT NULL); INSERT INTO test (value) VALUES ('test'); # Before starting the test script open a transaction and lock the table: BEGIN; SELECT * FROM test FOR UPDATE; # Now run the script Test script: --------------- <?php $pdo = new PDO('mysql:dbname=testdb;host=localhost', 'username', 'password'); $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $pdo->beginTransaction(); $statement = $pdo->prepare('SELECT * FROM test FOR UPDATE'); $statement->execute(); var_dump( $statement->fetchAll(), $statement->errorCode() ); $pdo->commit(); Expected result: ---------------- Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded; try restarting transaction in test-pdo.php:14 Stack trace: #0 test-pdo.php(14): PDOStatement->execute() #1 {main} thrown in test-pdo.php on line 14 Actual result: -------------- array(0) { } string(5) "00000" -- Edit bug report at https://bugs.php.net/bug.php?id=77163&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77163&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77163&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77163&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77163&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77163&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77163&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77163&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77163&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77163&r=support Expected behavior: https://bugs.php.net/fix.php?id=77163&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77163&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77163&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77163&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77163&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77163&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77163&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77163&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77163&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77163&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77163&r=mysqlcfg