cmd.txt

gdb --batch --command=gdb.bt -return-child-result --args ./a.out

compile.txt

gcc -g test.c

gdb.bt

set pagination off
set logging file gdb.txt
set logging on
init-if-undefined $_exitcode = -1
handle SIGTERM nostop print pass
handle SIGPIPE nostop noprint pass
run
if ($_exitcode == -1)
    bt
end

test.c

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

int main(int argc, char **argv)
{
    char *buf;

    buf = malloc(1<<31);

    fgets(buf, 1024, stdin);
    printf("%s\n", buf);

    return 1;
}