<?highlight_string('<?
	// Test
?>');?>

---------------------------------------
zend_highlight.c(154) : Block 0x082D6A8C status:
Beginning:  	Overrun (magic=0x081DAEFC, expected=0x7312F8DC)
      End:	Unknown
---------------------------------------

Suggested fix:

Index: zend_highlight.c
===================================================================
RCS file: /repository/Zend/zend_highlight.c,v
retrieving revision 1.16
diff -u -r1.16 zend_highlight.c
--- zend_highlight.c	2000/10/29 14:35:34	1.16
+++ zend_highlight.c	2001/01/12 06:55:05
@@ -149,6 +149,7 @@
 				case T_OPEN_TAG_WITH_ECHO:
 				case T_CLOSE_TAG:
 				case T_WHITESPACE:
+				case T_COMMENT:
 					break;
 				default:
 					efree(token.value.str.val);