uclibc(1.0.12) mq_send return value and errno issue

[Waldemar Brodkorb]

Hi Frank,
Frank Liu wrote,

> Please see the attached sample code. 
> 
> If I  turn READERS and WRITERS to 0, the test works fine. 
> 
> Adding another thread in the process by setting a non-zero number to either READERS or WRITER, the test program crashes due to the assertion at line 99. 

I think I found the reason for the problem.

Try attached patch,

best regards
 Waldemar
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