1.5.12-1: deadlock in gmtime/localtime

[Till Immanuel Patzschke]

Hello,

the problem occurs in a multithreaded program, but only one thread 
calling gmtime_r (calling localtime_r locks as well).  The other tread 
calls gettimeofday/time.  The thread calling gmtime_r is stalled 
completely.  Machine is XP SP2.

I've tested this problem on multiple machines (w/ diff timezones) but 
there isn't one consistent system criterion which makes this problem 
occur.  However, if it occurs, it occurs persistently.

Since I required gmtime the workaround was to write a gmtime routine 
(based on the existing one) without the special case for !is_gmtime -- 
works fine, no dead locks.

Has anyone encountered a similar problems and is there a generic 
workaround/fix for this problem?

Thanks,

Immanuel

P.S. Attached cygcheck.out...
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