memory

memory

[esg]

Declaring char a[15000000] gives me segmentation fault with g++
(on RedHat 7.1). Any suggestions?

Thanks
Josef Eschgfaeller

Re: memory

[Claudio Bley]

>>>>> "Josef" ==   <esg@unife.it> writes:

    Josef> Declaring char a[15000000] gives me segmentation fault with
    Josef> g++ (on RedHat 7.1). Any suggestions?

Well, the default compiler on RH 7.1 is gcc 2.96 which is just an old
development snapshot, was never intended to be released, is probably a
"bit" buggy at best and most importantly not supported in any way from
the GCC folks.

I hear, RH 8.0 is avialable and maybe it's a good time to upgrade your
distribution and compiler NOW.

Btw, the following works for me using GCC 3.2:

char a[15000000];

int main ()
{
  a[1] = 'a';
  a[2] = 'b';
}

-- 
Claudio Bley                                 ASCII ribbon campaign (")
Debian GNU/Linux advocate                     - against HTML email  X 
http://www.cs.uni-magdeburg.de/~bley/                     & vCards / \

Re: memory

[Eljay Love-Jensen]

Hi Josef,

 >> Declaring char a[15000000] gives me segmentation fault with g++ (on 
RedHat 7.1). Any suggestions?

Your stack isn't big enough.  Make your stack larger when you compile/run 
your program.

Alternatively, declare your char a[15000000] variable on the heap via 
"char* a = new char[15000000];", remember to manage the memory with a 
"delete[] a".  Better yet, use a "vector<char> a(15000000, '\0');", which 
will manage the memory for you.

--Eljay