[Bug analyzer/99716] -Wanalyzer-double-fclose when fclose is called inside a loop

[dmalcolm at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99716

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-03-23
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed.

Loop body is:
  fp_7 = fopen ("/tmp/test", "w");
  __builtin_fwrite ("hello", 1, 5, fp_7);
  fclose (fp_7);
  i_10 = i_1 + 1;

We're not transitioning fp_7 from "unchecked" back to "opened" at the 2nd
fopen.

Also, I think we're missing a warning about "fp" possibly being NULL, for the
case where the fopen fails.