Bug #65239 [NEW]: Strings of 2GB

From: pacerier at gmail dot com Operating system: linux PHP version: 5.3.26 Package: *General Issues Bug Type: Bug Bug description:Strings of 2GB Description: ------------ The documentation at http://php.net/manual/en/language.types.string.php states that "string can be as large as 2GB". Now 2GB means 2*1024^3 = 2147483648 bytes. The documentation is misleading, because strings start to misbehave once they get as large as 2147483647 bytes, and not 2147483648 bytes. Yes I know, it's just a 1 byte difference, but it makes a difference between code that works and code that breaks. Test script: --------------- error_reporting(E_STRICT|E_ALL); ini_set('memory_limit', '-1'); $gb = 1024 * 1024 * 1024; $str = str_repeat('a', 2 * $gb); echo $str[0]; // Notice: Uninitialized string offset: 0 Expected result: ---------------- The test script should output the string "a", since http://php.net/manual/en/language.types.string.php specifically claims that strings can be as large as 2147483648 bytes. Alternatively, we should re-word the documentation: Strings can be as large as 2147483647 bytes. Failure to adhere to do so would result in undefined behavior (for example, strlen etc). Actual result: -------------- Notice: Uninitialized string offset: 0 -- Edit bug report at https://bugs.php.net/bug.php?id=65239&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65239&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=65239&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65239&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65239&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65239&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65239&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65239&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65239&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65239&r=support Expected behavior: https://bugs.php.net/fix.php?id=65239&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65239&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65239&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65239&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65239&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65239&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65239&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65239&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65239&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65239&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65239&r=mysqlcfg