From antonio.dinarzo at studio.unibo.it  Mon Jun 13 12:12:14 2005
From: antonio.dinarzo at studio.unibo.it (antonio.dinarzo@studio.unibo.it)
Date: Mon, 13 Jun 2005 12:12:14 +0200
Subject: [Rd] memory allocation problem under linux
In-Reply-To: <Pine.LNX.4.61.0506130947360.23218@gannet.stats>
References: <1118652187.42ad471bd917f@posta.studio.unibo.it>
	<Pine.LNX.4.61.0506130947360.23218@gannet.stats>
Message-ID: <1118657534.42ad5bfecb192@posta.studio.unibo.it>

Scrive Prof Brian Ripley <ripley at stats.ox.ac.uk>:

> You keep on sending similar messages -- this is at least the third.  You 
> need to find out where the segfault is occurring using gdb, and you have 
> not told us.

Sorry for the repeated post (in 2 different mailing lists).
Tnx for your suggestion. Now I think I've found the problem. Try this:
////file foo.c
#include <R.h>
int **box;
void foo(){
  int i;
  box =   (int**)R_alloc(1,   sizeof(int *));
}
/////////////
Compiled with R CMD SHLIB foo.c
In R:
>dyn.load("foo.so")
>.C("foo")
*Segmentation fault*
The problem disappears when the declaration of 'box' comes inside the function
foo... Is this a bug?

Antonio, Fabio Di Narzo.



[Rd] memory allocation problem under linux
antonio.dinarzo@studio.unibo.it