https://issues.apache.org/bugzilla/show_bug.cgi?id=51153
Bug #: 51153
Summary: Buffer overrun exception while exporting XLS (with
fix)
Product: POI
Version: 3.8-dev
Platform: PC
Status: NEW
Severity: normal
Priority: P2
Component: HSSF
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
I'm receiving a buffer overrun when writing a workbook to a byte steam and I
believe I've found the issue. Unfortunately I can't share the spreadsheet so
I'll explain the problem as best as possible.
Using revision 1099313 from SVN.
Original stack trace which indicates that the buffer isn't big enough for the
serialised data:
Exception in thread "main" java.lang.RuntimeException: Buffer overrun
at
org.apache.poi.util.LittleEndianByteArrayOutputStream.checkPosition(LittleEndianByteArrayOutputStream.java:56)
at
org.apache.poi.util.LittleEndianByteArrayOutputStream.write(LittleEndianByteArrayOutputStream.java:100)
at
org.apache.poi.hssf.record.SubRecord$UnknownSubRecord.serialize(SubRecord.java:117)
at org.apache.poi.hssf.record.ObjRecord.serialize(ObjRecord.java:205)
at
org.apache.poi.hssf.usermodel.HSSFWorkbook$SheetRecordCollector.serialize(HSSFWorkbook.java:1248)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.getBytes(HSSFWorkbook.java:1296)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.write(HSSFWorkbook.java:1191)
Problem is in the file:
trunk/src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java:387 in the
method getDataSize() where it goes "size += _unused;". For my spreadsheet the
variable _unused can be -62 which results in the record's size being reported
as negative and the allocated buffer ends up too small.
Proposed fix:
public int getDataSize() {
int size = 6;
size += StringUtil.getEncodedSize(_str);
if (_unused != null) {
size++;
}
return size;
}
--
Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
