The ecvt man page/spcifications doesn't set a limit
to the number of digits that can be requested.
The following code will crash:
------------------------------------
# include <stdio.h>
# include <stdlib.h>

int main ()
{
        int i, j, n = 0;
        ecvt (2.0/3.0, 10000, &i, &j);
        return 0;
}
----------------------------
it should not crash.

Erez Strauss <erez>