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From: norm@oglvee.UUCP (Norman Joseph)
Newsgroups: comp.lang.c
Subject: Re: modification of strings
Message-ID: <466@oglvee.UUCP>
Date: 6 Feb 89 13:59:57 GMT
References: <7429@csli.STANFORD.EDU>
Organization: Oglevee Computer Systems, Connellsville, Pa
Lines: 24

From article <7429@csli.STANFORD.EDU>, by gandalf@csli.STANFORD.EDU (Juergen Wagner):
> In article <345@lakesys.UUCP> chad@lakesys.UUCP (D. Chadwick Gibbons) writes:
>>
>>                char *blah = "meow";
>>                char *tmp;
>>
>>                tmp = strcpy(blah, "grr, snarl, hiss");
> 
> and the stuff becomes hard to debug. Allocate all the memory you need, and
> don't try to overwrite static strings.

I can see that the above strcpy() will overwrite something somewhere
since strlen( "meow" ) < strlen( "grr, snarl, hiss" ).  But what if
the code looked like this (ignoring `tmp' for this example):

                char *blah = "meow\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";

                strcpy( blah, "grr, snarl, hiss" );

assuming that you could write to the space into which `blah' pointed?
-- 
Norm Joseph - Oglevee Computer System, Inc.
UUCP: ...!{pitt,cgh}!amanue!oglvee!norm
"Mate, that parrot wouldn't *VROOM* if you put four million volts through it!"