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From: Simon Wright <simon@pogner.demon.co.uk>
Subject: Re: Ada/Linux/select() problem
Date: 1997/04/04
Message-ID: <x7vg1x7l2gr.fsf@pogner.demon.co.uk>#1/1
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References: <334281E6.2781@nlr.nl>
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Newsgroups: comp.lang.ada
Date: 1997-04-04T00:00:00+00:00
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"moelands j.m." <moelands@nlr.nl> writes:

> I have a problem with the select() system call on linux in combination
> with Ada.
> 
> The following short example program, consisting of an Ada main routine 
> main.adb, an interface package sel.ad[sb] providing the interface between
> Ada and C, and a file dosel.c containing the C routine calling select(), 
> does run on a Unix machine (as it should, imo). However, it does not run 
> under linux - the result is a core dump. The call to select() seems to 
> garble the stack.
> 
> I use gnat 3.09 and linux 2.0.0. Does anybody have any idea what might
> cause this problem?

Works fine here (2.0.29). What system library versions are you using?

pogner[26]$ ldd main
        libgnat.so => /usr/lib/libgnat.so.3.09
        libc.so.5 => /lib/libc.so.5.4.17
        libpthreads.so.1 => /usr/lib/libpthreads.so.1.60.4
        libm.so.5 => /lib/libm.so.5.0.7

-Simon