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This patch adds support for thread safe stdio for Cygwin. Cygwin uses dynamic mutexes for locking, therefore it is necessary to: 1. Initialize FILE pointers _lock properly. 2. Destroy the lock when it is no longer needed. Regards, Thomas 2004-01-12 Thomas Pfaff <tpfaff@gmx.net> * libc/stdio/fclose.c: Include sys/lock.h. (fclose): Destroy lock when file is closed. * libc/stdio/findfp.c (__sfp): Initialize file pointers _lock member. * libc/stdio/freopen.c: Include sys/lock.h. (_freopen_r): Destroy lock when file is closed. * libc/stdio/vfprintf.c (__sbprintf): Initialize file pointers _lock member.
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