IconvGNU and IconvFBSD transcoders override application-set locale
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Key: XERCESC-1660
URL: http://issues.apache.org/jira/browse/XERCESC-1660
Project: Xerces-C++
Issue Type: Bug
Components: Utilities
Affects Versions: 2.7.0
Environment: any
Reporter: Boris Kolpackov
Attachments: setlocale.patch
When IconvGNU and IconvFBSD transcoders try to figure out the local code page,
they call setlocale with an empty string as a second argument. This results in
an implementation-specific action which usually consist of querying a set of
environment variables and overriding the current locale with the result. This
is obviously wrong since Xerces-C++ has no business changing the default
application locale. Out of curiosity I checked how things are done in ICU. I
found the following comment in the the source code:
"Do not call setlocale(LC_*, "")! Using an empty string instead of NULL, will
modify the libc behavior."
I came up with a patch that addresses this issue as well as makes the detection
code more robust.
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