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Reply-To: moss AT cs DOT umass DOT edu
Subject: Re: My arrays in C are too large
To: cygwin AT cygwin DOT com
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From: Eliot Moss <moss AT cs DOT umass DOT edu>
Message-ID: <93c59d26-82dc-8945-045e-6c0bb1f6b0e9@cs.umass.edu>
Date: Fri, 13 Sep 2019 07:37:15 -0400
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On 9/13/2019 7:04 AM, Blair, Charles E III wrote:
> I have been using on other machines a program that includes
> 
> char *a[50][8192];
> 
> but this declaration, by itself, gives "segmentation" errors.
> 
> [8192 is BUFSIZ on other machines, although it seems to be 1024 here.
> The program uses 50 different permutations on strings of size BUFSIZ.]

It's surprising to me, since that is 50 * 8192 = 400K char * pointers,
which is likely 1600K bytes (assuming a 32-bit machine).  Not tiny,
but well within the scope of modern machines.  The strings themselves
are what will take a lot of space, unless a lot of the pointers are
NULL or something.  There would seem to be something else going on.
Can you reduce this to the smallest failing example?

Regards - EM

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