[Bug c++/15537] New: GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[Bug c++/15537] New: GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

**********************************************************************
Backgroung and bug information:
Splay library is used for decoding Mpeg I Layer 1,2,3 audio
streams. The bug can be heard when you are listening to
particular mp3 files (not every) using noatun, kaboodle, or 
any other application using shared libmpeg-0.3.0.so KDE 3.2.2
library. (The easiest way to do so is to `artsplay file.mp3`).
The problem occurs as a constant sound distortion that is
cleary heard when listening to vocal without background
instruments.

**********************************************************************
Technical information:
GCC 3.4.0 release (vanilla, no patches applied) miscompiles 
splay library found in kdemultimedia-3.2.2 package under 
mpeglib/lib/splay path. C++ and C FLAGS used for compilation
are "-march=pentium2 -O2" and the ones set by KDE multimedia
package configure script. GCC 3.3.3 compiles this library
correctly.

These are the sizes of the objects compiled by different GCC
versions:

-rw-r--r--    1 root     root       155532 May 18 18:22 libsplay.o.333
-rw-r--r--    1 root     root       165628 May 18 18:46 libsplay.o.340

I also attach (C++) PreProcessor results

-rw-r--r--    1 root     root       278256 May 18 18:51 source.cpp.333
-rw-r--r--    1 root     root       272603 May 18 18:47 source.cpp.340

**********************************************************************
KDE Multimedia library was configured this way:

export CFLAGS="-march=pentium2 -O2"
export CXXFLAGS="-march=pentium2 -O2"

./configure --prefix=/opt/kde3 --with-gnu-ld --enable-final --disable-debug \
--with-xinerama --with-xine-prefix=/usr/local --with-esd-prefix=/usr \
--with-alsa-prefix=/usr  --with-alsa  --with-arts-alsa

**********************************************************************

The splay library was compiled this way:

g++ -DHAVE_CONFIG_H -I. -I. -I../../.. -I/opt/kde3/include -I/usr/lib/qt3/include \
-I/usr/X11R6/include -DQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor \
-Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align \
-Wconversion -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -DNDEBUG \
-DNO_DEBUG -O2 -march=pentium2 -O2 -Wformat-security -Wmissing-format-attribute \
-fno-exceptions -fno-check-new -fno-common -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST \
-DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION  -MT source.cpp -o libsplay.o

**********************************************************************
I'm running Fedore Core 1 x86 i386 compatible distributive with

1) Glibc 2.3.2 library
2) Binutils 2.15.90.0.3 (taken from Fedore Core 2)
3) Vanilla QT 3.2.2 library
4) Vanilla kernels 2.4.26 (GCC 2.95) and 2.6.6 (GCC 3.4.0)

GCC 3.3.3, 3.4.0 (both vanilla) were compiled (by themselves) this way:

./configure --enable-shared --enable-threads=posix --disable-checking \
--with-system-zlib --enable-__cxa_atexit --enable-multilib --with-gnu-as \
--with-gnu-ld --enable-languages="c,c++" --without-x --prefix=/opt/gcc3 \
--enable-long-long

**********************************************************************
I have a 600Mhz Pentium 3EB processor and Sound Blaster Live audio PC
using both Open Sound System and ALSA kernel sound modules.

With respect, Artem Tashkinov

-- 
           Summary: GCC 3.4.0 release (vanilla, no patches applied)
                    miscompiles splay library
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: t dot artem at mailcity dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

------- Additional Comments From t dot artem at mailcity dot com  2004-05-19 05:13 -------
Created an attachment (id=6336)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6336&action=view)
Source after GCC 3.3.3 preprocessor


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

------- Additional Comments From t dot artem at mailcity dot com  2004-05-19 05:14 -------
Created an attachment (id=6337)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6337&action=view)
Source after GCC 3.4.0 preprocessor


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|                            |i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-19 12:14 -------
Can you provide the preprocessed source code which can be compiled, the 3.3.3 
preprocessed source code gives errors when compiling with 3.3.3:
pr15537.33.cc:114: error: redeclaration of C++ built-in type `wchar_t'
pr15537.33.cc: In member function `int MpegAudioHeader::getChannelbitrate()':
pr15537.33.cc:1789: error: `cout' undeclared (first use this function)
pr15537.33.cc:1789: error: (Each undeclared identifier is reported only once 
   for each function it appears in.)
pr15537.33.cc:1789: error: `endl' undeclared (first use this function)
pr15537.33.cc: In constructor `MpegAudioStream::MpegAudioStream()':
pr15537.33.cc:2203: error: invalid conversion from `void*' to `char*'


The 3.4.0 one does with 3.4.0 also:
mpegAudioInfo.cpp: In member function `void MpegAudioInfo::print(const char*)':
mpegAudioInfo.cpp:222: error: `cout' undeclared (first use this function)
mpegAudioInfo.cpp:222: error: `endl' undeclared (first use this function)
mpegAudioInfo.cpp: In member function `int 
MpegAudioInfo::getFrame(MpegAudioFrame*)':
mpegAudioInfo.cpp:256: error: `cout' undeclared (first use this function)
mpegAudioInfo.cpp:256: error: `endl' undeclared (first use this function)

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-19 12:16 -------
Also does -fno-unit-at-a-time help?

Or -fno-strict-aliasing?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
            Summary|GCC 3.4.0 release (vanilla, |[3.4/3.5? Regression] GCC
                   |no patches applied)         |3.4.0 release (vanilla, no
                   |miscompiles splay library   |patches applied) miscompiles
                   |                            |splay library
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

------- Additional Comments From t dot artem at mailcity dot com  2004-05-19 12:59 -------
When I runned cpp on this code it warned that <iostream> file can't be included.
So I feel that the inclusion of <iostream> in the beginning of the file will let
you compile the code

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

------- Additional Comments From t dot artem at mailcity dot com  2004-05-19 13:00 -------
I can attach the complete source code of this libary tomorrow if you'd like to
have it here

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-19 13:01 -------
Use the "-save-temps" option instead using cpp directly.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-05-28 22:06 -------
This should not have a target milestone until we've confirmed that it's really a
bug in G++, so I've removed that.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.1                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug c++/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[t dot artem at mailcity dot com]

------- Additional Comments From t dot artem at mailcity dot com  2004-06-02 04:27 -------
The library code has been slightly changed as for KDE 3.3 alpha 1 version and
GCC 3.4 manages to compile it correctly. Though the issue with KDE 3.2.2 remains.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug rtl-optimization/15537] [3.4/3.5? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-12 07:55 -------
I almost think this is the normal FP "non-bug", 323.
Can you try with -ffloat-store if that works this is the normal "non-bug"?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |rtl-optimization


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537

[Bug rtl-optimization/15537] [3.4/4.0? Regression] GCC 3.4.0 release (vanilla, no patches applied) miscompiles splay library

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-27 19:50 -------
No feedback in 3 months.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15537