Bug #17971: Commenting out xml declaration with // causes parse error

From: martin@classaxe.com Operating system: Windows 95/98 4.10 Apache 1.3.24 PHP version: 4.2.1 PHP Bug Type: Reproducible crash Bug description: Commenting out xml declaration with // causes parse error Code Fragment: <?php header("Content-Type: text/xml"); print("" ."<?xml version='1.0' encoding='UTF-8' ?>\n" // No ."<!DOCTYPE MKS SYSTEM 'http://www.classaxe.com/mks/mks.dtd'>\n" ."<?xml-stylesheet type='text/xsl' href='mks.xslt' ?>\n" // No ."<MKS>" ." <USERLIST>" ." <USER userAcctName='Martin' " ."userAcctEmail='martin@classaxe.com'/>\n" // OK ." </USERLIST>" ."</MKS>" ); ?> For test purposes I'd like to be able to remove a stylesheet reference (second // No) but this causes a parse error when the line is an XML construct. The Block comment /* ... */ works however. Other configs tested and failed: PHP 4.0.6 on Linux 2.0.36 / Apache/1.3.23 (XML active) PHP 4.2.1 on FreeBSD 4.4-RELEASE #0 / Apache/1.3.26 (XML all active) -- Edit bug report at http://bugs.php.net/?id=17971&edit=1 -- Fixed in CVS: http://bugs.php.net/fix.php?id=17971&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=17971&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=17971&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=17971&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=17971&r=support Expected behavior: http://bugs.php.net/fix.php?id=17971&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=17971&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=17971&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=17971&r=globals