ReEncodedInputStream may fail to read all of source Reader.
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Key: DERBY-1396
URL: http://issues.apache.org/jira/browse/DERBY-1396
Project: Derby
Type: Bug
Reporter: Tomohito Nakayama
The class org.apache.derby.impl.drda.ReEncodedInputStream seems to have a bug...
In this class, there exists next code.
int count;
if(( count = reader.read(decodedBuffer_, 0, BUFFERED_CHAR_LEN )) < 1 ){
return null;
}
In this code, the condition of "<1" was intended to judge whether reader was
read entirely.
However,spec of java api says that reader returns -1 if the end of the reader
has been reached and not 0.
Then "<1" is not appropriate.
Current code judges 0 as the end of reader.
Then, if 0 was returned in the meaning that "No character was read now but may
continue" as possible in java api,
this code will not work correctly...
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