🚀 go-pugleaf

jimlynch@netcom.com (Jim Lynch) writes:

>I am given to understand that the storage allocated by
>
>char *x = "abcde" ;
>
>is not writable.

Correct.

>The reason I ask is that I used such a construct in gcc-2.3.2 ...
[example omitted]
>... Shouldn't the compiler have warned me?

With gcc, use the -Wwrite-strings option. Here's an extract from the
manual:

	  -Wwrite-strings
	       Give string constants the type  const  char[length]  so
	       that copying the	address	of one into a non-const	char *
	       pointer will get	a warning.  These warnings  will  help
	       you  find  at  compile  time code that can try to write
	       into a string constant, but only	if you have been  very
	       careful	about  using  const in declarations and	proto-
	       types.  Otherwise, it will just be a nuisance; this  is
	       why we did not make `-Wall' request these warnings.

-- 
Fergus Henderson             fjh@munta.cs.mu.OZ.AU      
This .signature virus is a self-referential statement that is true - but 
you will only be able to consistently believe it if you copy it to your own
.signature file!