"Manish Katiyar" <mkatiyar@xxxxxxxxx> writes: > On Wed, Aug 13, 2008 at 10:07 AM, Rene Herman <rene.herman@xxxxxxxxxxxx> wrote: >> On 13-08-08 02:57, Peter Teoh wrote: >> >>> But since u have assigned it to the same address of NAME, it will always >>> print HELLO world. So the whole thing has nothing got to do with >>> optimization (gcc -O0 to disable it, which is also default). >> >> Can y'all please just listen to Johannes? It definitely does. We have: >> >>> int main() >>> { >>> char *p_name = "santosh"; >>> char *q_name = "santosh"; >> >> It is unspecified whether or not the compiler will allocate one or two >> copies of the character sequence "santosh" and therefore whether or not >> p_name != q_name; > > Refer to below link ...... first bullet clearly says that gcc will > store only one copy if strings are identical. > > http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/Incompatibilities.html gcc is one compiler out of many. While gcc might always collapse them, others might not always or never at all do so. Hannes -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ