Re: [Qemu-devel] [PATCH] checkpatch: Disallow glib asserts in main code

["Daniel P. Berrange" <berrange@redhat.com>]

On Thu, Apr 27, 2017 at 05:55:26PM +0100, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> 
> Glib commit a6a875068779 (from 2013) made many of the glib assert
> macros non-fatal if a flag is set.
> This causes two problems:
>   a) Compilers moan that your code is unsafe even though you've
>      put an assert in before the point of use.
>   b) Someone evil could, in a library, call
>      g_test_set_nonfatal_assertions() and cause our assertions in
>      important places not to fail and potentially allow memory overruns.
> 
> Ban most of the glib assertion functions (basically everything except
> g_assert and g_assert_not_reached) except in tests/
> 
> This makes checkpatch gives an error such as:
> 
>   ERROR: Use g_assert or g_assert_not_reached
>   #77: FILE: vl.c:4725:
>   +    g_assert_cmpstr("Chocolate", >, "Cheese");

Or could we perhaps instead undo the damage via a hack like

 #define g_assert_cmpint g_assert_cmpint_orig
 #define g_assert_cmpint(x, y, z) \
     g_assert_cmpint_orig(x, y,x); \
     abort()
    

Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|