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From: awdorrin <awdorrin@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: POSIX.Semaphores question
Date: Mon, 5 Dec 2011 04:25:38 -0800 (PST)
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Date: 2011-12-05T04:25:38-08:00
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On Dec 3, 2:59=A0pm, Niklas Holsti <niklas.hol...@tidorum.invalid>
wrote:
>
> This pragma gives the variable a very short linkage name, "ready", which
> is moreover a common word. Perhaps the same name is used by some other
> module of the program, for some other program item, and this confuses
> the linker. Does the linker give any errors or warnings?
>
> Try it with a longer name, one less likely to be in use already for
> something else.
>

I simplified the example code that I posted - the actual name I'm
using is much longer. (Sem_R_RTSIM_SHM_READY, R_RTSIM_SHM_READY and
r_rtsim_shm_ready)

I see no warnings or errors during the compile or link. I am linking
the Ada files into a library which is compiled into a C main.

The only thing I do see, is when I add the compile flat to print out
the rep specs - the Semaphore is given two different sizes...

for SEM_R_RTSIM_SHM_READY'Size use 128;
for SEM_R_RTSIM_SHM_READY'Size use 192;

It should be 128, not sure why its later showing as 192... from
looking at the definition for sem_t on this linux system, it should be
128.