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Date:      Sun, 05 Feb 2017 18:21:48 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 216627] multimedia/zoneminder and multimedia/zoneminder-h264: fail to build with clang 4.0
Message-ID:  <bug-216627-13-0Wmy8iWENv@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-216627-13@https.bugs.freebsd.org/bugzilla/>
References:  <bug-216627-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216627

--- Comment #4 from Jan Beich (mail not working) <jbeich@FreeBSD.org> ---
Comment on attachment 179574
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D179574
zoneminder patch

Can you describe other changes? This is mainly for commit message.

> +-    if ( mem_ptr < 0 )
> ++    if ( mem_ptr < (void *)0 )
[...]
> +-    if ( mem_ptr > 0 )
> ++    if ( mem_ptr > (void *)0 )

mmap(2) returns MAP_FAILED on failure while shmat(2) returns (void *)-1. Bo=
th
are greater than 0 on FreeBSD i386/amd64 but may not be so on other platfor=
ms.

> +-    if ( shmdt( mem_ptr ) < 0 )
> ++    if ( shmdt( mem_ptr ) < (void *)0 )

shmdt(2) returns int, not a pointer. I don't think you need to touch this l=
ine.

> +-    if ( (fd =3D fopen( path, "w" )) < 0 )
> ++    if ( (fd =3D fopen( path, "w" )) < (void *)0 )

fopen(3) returns NULL on failure, not a negative value. Maybe use "=3D=3D N=
ULL"
instead.

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