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Re: [PATCH RESEND 1/3] vfio/pci: fix a null pointer reference in vfio_ro

From: Laszlo Ersek
Subject: Re: [PATCH RESEND 1/3] vfio/pci: fix a null pointer reference in vfio_rom_read
Date: Wed, 11 Mar 2020 14:00:01 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 03/11/20 12:54, Markus Armbruster wrote:
> Laszlo Ersek <address@hidden> writes:

>> In fact I was about to mention, "I really don't understand why compilers
>> don't yell upon seeing pointer-to-void arithmetic", but I got distracted
>> and forgot about that thought. In retrospect, that may have been for the
>> best! :)
> You're looking for
> '-Wpointer-arith'
>      Warn about anything that depends on the "size of" a function type
>      or of 'void'.  GNU C assigns these types a size of 1, for
>      convenience in calculations with 'void *' pointers and pointers to
>      functions.  In C++, warn also when an arithmetic operation involves
>      'NULL'.  This warning is also enabled by '-Wpedantic'.

Thanks! It seems like "-Wpedantic" and "-pedantic" are synonymous. And
the latter used to be part of my standard set of flags, while I worked
on hosted C programs where I could influence the build flags ;)


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