🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: bnr.lang.c++
Article #5

Re: Is pointer in my address space?

#5
From: Eric Hildum
Date: Sat, 10 Oct 1992 03:41
9 lines
1039 bytes
In C/C++, you can check if a pointer is null before use, but not if it is 
pointing to valid memory. This kind of a check is really an operating system
issue, not a language issue (at least, not in languages such as C and C++).
You should look into the memory related system and library calls that are 
available to you, you may find what you need there. Of course, after determing
whether or not the address is valid for the process, you still have the 
problem of deciding if your pointer is pointing to a valid  object.

					Eric
Technical Details
Message-ID: <1992Oct10.034147.6115@ntmtv>
Path: arc1-ca.pugleaf.net!sparky!uunet!portal!ntmtv!hildum
References: <ANDRZEJ.92Oct9135447@bcars268.bnr.ca> <1992Oct9.160154.2427@bnr.ca> <1992Oct9.190838.19205@bcrka451.bnr.ca>

Show Full Headers
Complete Article Headers
Newsgroups: bnr.lang.c++,comp.lang.c++
Path: arc1-ca.pugleaf.net!sparky!uunet!portal!ntmtv!hildum
From: hildum@ntmtv.UUCP (Eric Hildum)
Subject: Re: Is pointer in my address space?
Message-ID: <1992Oct10.034147.6115@ntmtv>
Sender: hildum@ntmtv (Eric Hildum)
Nntp-Posting-Host: ariel
Organization: Northern Telecom Inc, Mountain View, CA
References: <ANDRZEJ.92Oct9135447@bcars268.bnr.ca> <1992Oct9.160154.2427@bnr.ca> <1992Oct9.190838.19205@bcrka451.bnr.ca>
Date: Sat, 10 Oct 1992 03:41:47 GMT
Lines: 9