Re: osx and thread safety?

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От Tom Lane
Тема Re: osx and thread safety?
Дата
Msg-id 29072.1092717005@sss.pgh.pa.us
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Ответ на osx and thread safety?  (Theodore Petrosky <tedpet5@yahoo.com>)
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Theodore Petrosky <tedpet5@yahoo.com> writes:
> I get these errors:

> ld: common symbols not allowed with MH_DYLIB output
> format with the -multi_module option
> fe-secure.o definition of common _thread_in_send (size
> 4)

Some googling turns up the fact that OS X does not like uninitialized
global variables in dynamic libraries.  There are a couple of
workarounds but the easiest one seems to be to initialize the variable.
I added "= 0" to the definition of thread_in_send and the problem
went away.

It's possible that this would create issues on platforms where
type pthread_key_t is neither integral nor a pointer type.  Does
anyone know of such?

            regards, tom lane

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