[Bug analyzer/109570] detect fclose on unopened or NULL files

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109570

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks for filing this bug.

I think -fanalyzer should warn about fclose(NULL), but not for free(NULL).