On Tue, Jul 17, 2001 at 11:51:52AM -0400, Ciarcinski, Adam (ISS Brussels) wrote:
> Hello,
> 
> First of all, sorry for putting it on this list, but I'm using NetBSD.
> I have problem with the following, simple, piece of C code:
> 
> 
> #include <stdio.h>
> 
> int main()
> {
> char *test = "Test";
> 
> printf("%s\n", test);
> snprintf(test, 5, "Passed");
> printf("%s\n", test);
> 
> return 0;
> }
> 
> 
> If you compile and run it - crash!
> If you change 'char *test' to 'char test[]' - works!
> 
> Tried with egcs-1.1.2 and gcc-2.95.3 on NetBSD-current (yesterday sources).

gcc will allocate strings in text segment, which means they're read-only.
I'm not sure what changing * to [] - either move the string from text to
data segment, or copy it to stack and have test point to it instead of
the address in text.

--
Manuel Bouyer <bouyer@antioche.eu.org>
--