#25949 [NEW]: var_dump endless loops with NAN or INF float

From: alefor at gmx dot de Operating system: Debian/unstable r3.01 GNU/Linux PHP version: 4.3.3 PHP Bug Type: Scripting Engine problem Bug description: var_dump endless loops with NAN or INF float Description: ------------ var_dump a float with inf/nan value lead to an endless loop. Same result for cli php and for apache module. GDB backtrace follows, taken suspending the endless loop execution. (gdb) bt #0 0x0810bd85 in ap_php_cvt () #1 0x0810bfd6 in ap_php_ecvt () #2 0x0810c05d in ap_php_gcvt () #3 0x0810c86a in ap_php_gcvt () #4 0x0810ccd6 in vspprintf () #5 0x08108ef8 in php_printf () #6 0x080e7507 in php_var_dump () #7 0x080e77a5 in zif_var_dump () #8 0x081400e7 in execute () #9 0x08133349 in zend_execute_scripts () #10 0x0810b5fd in php_execute_script () ap_php_cvt family is in main/snprintf.c file. Reproduce code: --------------- $str = "inf "; $f = (float)$str; var_dump($f); Expected result: ---------------- Don't know. Maybe "float(INF)" ? Actual result: -------------- Endless loop. No output. -- Edit bug report at http://bugs.php.net/?id=25949&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25949&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25949&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=25949&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=25949&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=25949&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=25949&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=25949&r=support Expected behavior: http://bugs.php.net/fix.php?id=25949&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=25949&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=25949&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=25949&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25949&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=25949&r=dst IIS Stability: http://bugs.php.net/fix.php?id=25949&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=25949&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=25949&r=float