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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=76247 --- shadow/76247 2005-09-27 08:07:41.000000000 -0400 +++ shadow/76247.tmp.12762 2005-09-27 08:07:41.000000000 -0400 @@ -0,0 +1,60 @@ +Bug#: 76247 +Product: Mono: Class Libraries +Version: 1.1 +OS: +OS Details: Ubuntu Hoary/x86 +Status: NEW +Resolution: +Severity: +Priority: Normal +Component: Sys.XML +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: XmlTextReader corrupts UTF-16 surrogate characters in strings + +Description of Problem: +High Unicode characters (values over 0x10000) are represented in 16-bit +strings using UTF-16 surrogate pairs of two pseudocharacters. + +When reading an XML file containing such characters with XmlTextReader, +strings read by ReadString() etc include corrupted UTF-16 surrogate pairs +instead of the correct values. + + +Steps to reproduce the problem: +1. Read a file with an XmlTextReader containing the high char U-000289c0 +2. Read a value into a string, eg with the ReadString() method +3. Examine the characters in the string + + +Actual Results: +The character is read as the invalid pair: 0xd801, 0x65c0 + + +Expected Results: +Should be read as: 0xd862, 0xddc0 + + +How often does this happen? +Every time. + + +Additional Information: +The PeekChars method correctly combines surrogate pairs in the input, but +there are several methods that put things back into strings which all use +an incorrect formula for creating surrogate pairs: + +WRONG: + (char) (ch / 0x10000 + 0xD800 - 1) + (char) (ch % 0x10000 + 0xDC00) + +RIGHT: + (char) ((ch - 0x10000) / 0x400 + 0xD800) + (char) ((ch - 0x10000) % 0x400 + 0xDC00) + + +Tested SVN r50834 on Linux and 1.1.9 release on Mac OS X. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
