[xemacs-hg @ 2005-08-01 16:28:18 by darrylo] On some (64-bit) systems, sizeof(int) != sizeof(long), and this can cause crashes because in-use lisp objects can get prematurely gc'd (and 0xdeadbeef'd). This occurs because the memory_description for the Gap_Array structure incorrectly describes some members as XD_INT's (32-bit objects), when they should actually be XD_ELEMCOUNT's and XD_BYTECOUNT's (both 64-bit objects), as that is how they are declared in the structure.

/* Synched up with: FSF 19.28. */

#include <sgtty.h>
#include <signal.h>
#define STRLEN 100
static char str[STRLEN+1] = "%?emacs"; /* extra char for the null */

switch_to_proc(){
    char *ptr = str;
    while (*ptr) ioctl(0, TIOCSTI, ptr++);
    ioctl(0, TIOCSTI, "\n");
    kill(getpid(), SIGTSTP);
    }

set_proc_str(ptr) char *ptr; {
    if (strlen(ptr) <= STRLEN)
	strcpy(str, ptr);
    else
	printf("string too long for set-proc-str: %s\n", ptr);
    }