On Linux "Input data transcoding error" message does not contain invalid
character if no proper locale is set
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Key: XERCESC-1727
URL: https://issues.apache.org/jira/browse/XERCESC-1727
Project: Xerces-C++
Issue Type: Bug
Components: Utilities
Affects Versions: 2.7.0
Environment: Linux, both 32- and 64-bit Red Hats, probably others
Reporter: Sergey Melnikov
The test case involved russian letter put into XML file. Transcoding crashed
with "Input data transcoding error..." message but no symbol displayed. I've
traced the problem to memory allocation for a single character being
transcoded. The size of a character in Linux implementation is determined
through 'mblen' in calcRequiredSize(..) but it seems nothing more than plain
7-bit ASCII is acceptable.
Here is a source code snippet based on original calcRequiredSize fed with a
character I used:
char sExp[2]={'\192','\0'};
// the line below "fixes" the case: the character (russian 'A') is shown within
exception message
// setlocale(LC_ALL,"Russian");
int iLen=std::mblen(&sExp[0],MB_CUR_MAX);
if(-1 == iLen)
{
// ERROR! we should not be here, since no allocation will be
done -- and that's what I get
throw 1;
}
Other platforms (Win32, Solaris etc) worked out fine.
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