From: anton@mips.complang.tuwien.ac.at   
      
   Paul Rubin  writes:   
   >The Linux man page for sprintf   
   >and friends has the thread safety attribute "MT-Safe locale" for those   
   >functions.  I don't know what that means exactly though.   
      
   That's why the man page points you to attributes(7), and when I do   
      
   man 7 attributes   
      
   it tells me that MT-Safe means "thread-safe", i.e., "safe to call in   
   the presence of other threads."   
      
   About the "locale" remark it says:   
      
   |Functions annotated with locale as an MT-Safety issue read from the   
   |locale object without any form of synchronization.  Functions   
   |annotated with locale called concurrently with locale changes may   
   |behave in ways that do not correspond to any of the locales active   
   |during their execution, but an unpredictable mix thereof.   
      
   But you are not supposed to change the locale in a multi-threaded   
   program.   
      
   Anyway, the locale thing shows a problem with the suggestion to use   
   sprintf() instead of ecvt_r().   
      
   - anton   
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   M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html   
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