Date: Sat, 31 Mar 2001 05:42:12 -0800 From: Matthew Hunt <mph@astro.caltech.edu> To: Vladimir Mandro <vlaman@smela.ldc.net> Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: bug in gcc or my hands? Message-ID: <20010331054212.A5816@wopr.caltech.edu> In-Reply-To: <E14jLOP-0000yy-00@vlaman.smela.ldc.net>; from vlaman@smela.ldc.net on Sat, Mar 31, 2001 at 04:26:13PM %2B0300 References: <E14jLOP-0000yy-00@vlaman.smela.ldc.net>
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On Sat, Mar 31, 2001 at 04:26:13PM +0300, Vladimir Mandro wrote:
> ---begin of main.c---
> void main()
> {
> char *s = "Hello";
> *s=0;
> }
> ---end of main.c---
[...]
> Replacing char *s = "Hello" with char s[] = "Hello". All works fine.
Literal strings are stored in memory marked read-only; you cannot
modify them. The difference is that char s[] = "Hello" places a copy
of "Hello" on the stack where it can be modified.
> Book "The C Programming Language" by Kernighan&Ritchie tells, that
> declaration char *s and char s[] are equivalent.
It's wrong or outdated (first edition?), or you are misunderstanding
the context in which it says they are equivalent.
--
Matthew Hunt <mph@astro.caltech.edu> * Inertia is a property
http://www.pobox.com/~mph/ * of matter.
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