[GRASS-user] v.edit bus error

[Hazael Maldonado Torres]

Hi there,

Before answering the questions from William, I would like to mention that GRASS
is being run on an Intel Mac and that as far as I can tell (using the activity
monitor) it is the Intel binaries of GRASS that are being used (no Rosseta).

> Hazael, can you check Console.app for a crashlog for v.edit?  It would
> be in ~/Library/Logs/CrashReporter in the log list.

There is nothing in the logs regarding the v.edit error message. I also tried at
/Library/Logs/CrashReporter

>>> http://wald.intevation.org/tracker/?func=detail&atid=204&aid=455&group_id=21
>>>
>>
>> Not related.
>>
> If it's the null message causing the v.edit bus error, then it is, since
> I found a null message in v.edit, among others.

I have written an small program to test the G_message("") vs G_message(NULL) and
I can confirm that on Mac OS X 10.4.10 G_message(NULL) triggers a bus error. The
function responsible for the error is vsprintf(). I tried the same program on
another computer running Ubuntu Linux and both G_message("") vs G_message(NULL)
works perfectly fine.

The content of the test program is listed below which contains the function
G_message() whose content was taken from GRASS's source code.


#define MSG   0


#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>


void
G_message                      (const char         *msg,
                                ...);


int
main(int argc, char **argv)
{
    printf("Test for GRASS\n");

    G_message("test");
    printf("\n");
    G_message("");
    printf("\n");
    G_message(NULL);
    printf("\n");

    return EXIT_SUCCESS;
}


void
G_message                      (const char         *msg,
                                ...)
{
    char                    buffer[2000]; /* G_asprintf does not work */
    va_list                 ap;

    va_start(ap, msg);
    vsprintf(buffer, msg, ap);
    va_end(ap);

    print_error(buffer,MSG);
}


Regards,

Hazael