[Bug fortran/85840] Memory leak in write.c

[jjcogliati-r1 at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85840

--- Comment #9 from Joshua Cogliati <jjcogliati-r1 at yahoo dot com> ---
Looking at write.c, there are multiple places where things like the pattern:
result = select_string (dtp, f, str_buf, &res_len, kind); 
...
get_float_string (dtp, f, source , kind, 0, buffer,
                           precision, buf_size, result, &res_len);
...
if (res_len > BUF_STACK_SZ)
  free (result);


appear (such as write_complex, write_real etc).

So either they all need to be fixed, or get_float_string needs to never change
the length compared to select_string.

I could look into either method of fixing this if you want.  (And for what it
is worth, I do have copyright assignment paperwork from both myself and my
employer for GCC filed)