Rich Felker
cf27184d00
prior to commit e68c51ac46, h_errno was
actually an external data object not a macro. bring back the symbol,
and use it as the storage for the main thread's h_errno.
technically this still doesn't provide full compatibility if the
application was multithreaded, but at the time there were no res_*
functions (and they did not set h_errno anyway), so any use of h_errno
would have been via thread-unsafe functions. thus a solution that just
fixes single-threaded applications seems acceptable.
12 lines
197 B
C
12 lines
197 B
C
#include <netdb.h>
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#include "pthread_impl.h"
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#undef h_errno
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int h_errno;
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int *__h_errno_location(void)
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{
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if (!__pthread_self()->stack) return &h_errno;
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return &__pthread_self()->h_errno_val;
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}
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