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From: | byrne AT katie DOT vnet DOT net (Paul Byrne) |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | a rather strange error with global variables... |
Organization: | Vnet Internet Access, Inc. - Charlotte, NC. (704) 374-0779 |
Lines: | 28 |
Message-ID: | <70k64a$gu$1@katie.vnet.net> |
Date: | 21 Oct 1998 04:31:06 -0400 |
NNTP-Posting-Host: | 166.82.1.7 |
X-Trace: | ralph.vnet.net 908958668 166.82.1.7 (Wed, 21 Oct 1998 04:31:08 EDT) |
NNTP-Posting-Date: | Wed, 21 Oct 1998 04:31:08 EDT |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
I've been getting some unusual errors with a program I'm writing. I was writing temporary code to help test some new classes. I included the following global variables: char m[256][256]; int v[256][256]; int t[256][256]; int e[256][256]; and everything worked fine. However, simply changing the order to int e[256][256]; char m[256][256]; int v[256][256]; int t[256][256]; causes problems. Everything compiles fine. Running produces a SIGSEGV. Further playing with the order produces a range of ugly errors. In some cases (under win95) the program kills the dos box and gives a dialog box telling you to restart the machine (if you ignore this and run it again it reboots the machine for you). In another case, the program spewed garbage to the screen (graphics, under allegro) and locked up the machine. Running under dos (without the win95) didn't make any difference. Is there some subtlety I'm missing here? Thanks, -paul
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