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Re: [Qemu-devel] [PATCH] checkpatch: Disallow glib asserts in main code
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [PATCH] checkpatch: Disallow glib asserts in main code |
Date: |
Fri, 28 Apr 2017 14:42:30 +0100 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Thu, Apr 27, 2017 at 05:55:26PM +0100, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
>
> 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
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