From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-340174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 21887 invoked by alias); 10 Dec 2010 23:45:54 -0000
Received: (qmail 21878 invoked by uid 22791); 10 Dec 2010 23:45:53 -0000
X-SWARE-Spam-Status: No, hits=-2.8 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00,TW_MM,TW_MV
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 10 Dec 2010 23:45:48 +0000
From: "matt at use dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/46890] New: compile regression from 4.5 when building scummvm's player_v4a.cpp
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: matt at use dot net
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-46890-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Fri, 10 Dec 2010 23:45:00 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2010-12/txt/msg01157.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46890

           Summary: compile regression from 4.5 when building scummvm's
                    player_v4a.cpp
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: matt@use.net


using 4.6.0 20101206 (experimental) [trunk revision 167481]:

building the open source project, scummvm (http://scummvm.org) trunk revision :
54858
matt@matt-desktop:~/src/scummvm$ CXX=/usr/lib/gcc-snapshot/bin/g++ ./configure
--enable-all-engines
[...]
matt@matt-desktop:~/src/scummvm$ make
[...]
In file included from ./engines/scumm/player_v4a.h:32:0,
                 from engines/scumm/player_v4a.cpp:27:
./sound/mods/tfmx.h:115:2: error: expected ';' after struct definition
./sound/mods/tfmx.h:115:11: error: ISO C++ forbids declaration of '_resource'
with no type [-fpermissive]

[ ... and then several more compile errors that snowball from the first one ...
]

The code in question looks like this:


        struct MdatResource {
                const byte *mdatAlloc;  ///< allocated Block of Memory
                const byte *mdatData;   ///< Start of mdat-File, might point
before mdatAlloc to correct Offset
                uint32 mdatLen;

                uint16 headerFlags;
//              uint32 headerUnknown;
//              char textField[6 * 40];

                struct Subsong {
                        uint16 songstart;       ///< Index in Trackstep-Table
                        uint16 songend;         ///< Last index in
Trackstep-Table
                        uint16 tempo;
                } subsong[kNumSubsongs];

                uint32 trackstepOffset; ///< Offset in mdat
                uint32 sfxTableOffset;

                uint32 patternOffset[kMaxPatternOffsets];       ///< Offset in
mdat
                uint32 macroOffset[kMaxMacroOffsets];   ///< Offset in mdat

                void boundaryCheck(const void *address, size_t accessLen = 1)
const {
                        assert(mdatAlloc <= address && (const byte *)address +
accessLen <= (const byte *)mdatData + mdatLen);
                }
        } const *_resource;


Configuring with g++-4.5 (4.5.1-7ubuntu2) or g++-4.4 (Ubuntu/Linaro
4.4.4-14ubuntu5) fixes the compilation.