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Date: Wed, 29 Nov 2006 16:06:58 +0200
From: Niklas Holsti <niklas.holsti@nospam.please>
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Subject: Re: Possible heap problem on Windows, help sought
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Date: 2006-11-29T16:06:58+02:00
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Niklas Holsti (that's me) wrote:

> I'm using Gnat 3.15p (why change if it works ;-) on both MS Windows XP 
> and Linux (Debian) and having some problems on the Windows platform
...
> My compiled Ada application runs fine on Linux both for large and small 
> jobs. On Windows it works for small jobs but stops in the middle for 
> larger ones, with no error or exception message. Here "large" means 
> about 250 - 300 MB of heap. I have some catch-all exception handlers at 
> various levels of the software that should report exceptions using 
> Text_IO, but nothing appears.
> 
> The funny thing is that if I run the application under gdb on Windows it 
> works for large jobs too.

Well I made a small test program using my ordinary compilation options 
(-g -O2 -gnato -fstack-check) and it happily allocated and used 300 MB 
of heap, as I asked it to, so it seems that this is not a heap problem. 
Sorry for a mistaken hypothesis, I should have checked it before posting 
my question. But the problem remains and any advice will be gratefully 
received, although I now suspect that the cause may be a programming 
error, a Heisenbug that disappears in the debugger and does not manifest 
on Linux for some reason.

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .