TestDataReader class in jdbcapi/Stream.java creates test data of which length
is not equals to value passed as length of test data.
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Key: DERBY-1401
URL: http://issues.apache.org/jira/browse/DERBY-1401
Project: Derby
Type: Bug
Reporter: Tomohito Nakayama
In the work of DERBY-1301, I found this issue.
Seeing the code, next part in
org.apache.derbyTesting.functionTests.tests.jdbcapi.Stream.TestDataReader had
problem.
public int read( char[] cbuf,
int off,
int len ){
if(wroteLength >= total)
return -1;
int i;
for(i = off ;
i < off + len &&
wroteLength <= total ;
i++, wroteLength ++){
cbuf[i] = (char) (wroteLength % 0x10000L);
}
return i - off;
}
Problem exists in next part...
wroteLength <= total
Because an evaluation of this expression is true when wroteLength equals total,
test data is created beyond max length passed in total.
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