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The FILE pointer release in fclose and freopen is not thread safe. As soon as the FILE pointers _flag member is set to 0 the FILE pointer can be reused by other threads. This can be avoided by resetting the _flag member as the final operation.
Thomas
2004-01-19 Thomas Pfaff <tpfaff@gmx.net>
* libc/stdio/fclose.c (fclose): Release FILE as the last step. * libc/stdio/freopen.c (freopen): Ditto.
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