Bugzilla Bug 64426

hugs98 fails to emerge, and I suspect it's gcc-3.4 related, because I have 2
machines with gcc-3.4 failing, and one with gcc-3.3 succeeding to compile. On
the site they say that "On some systems, some of the library modules using the
FFI may fail to compile: please report the bug", so I shall send them an email
too.

Reproducible: Always
Steps to Reproduce:
1. emerge hugs98
2.
3.

Actual Results:  
Converting ParsecExpr.hs
Converting ParsecLanguage.hs
Converting ParsecPerm.hs
Converting ParsecPos.hs
Converting ParsecPrim.hs
Converting ParsecToken.hs
Converting GetOpt.lhs
Converting Unique.lhs
Converting QuickCheck.hs
Converting QuickCheckPoly.hs
Converting QuickCheckUtils.hs
Copy AnsiInteract.hs
Copy AnsiScreen.hs
Stub CVHAssert -> Hugs.CVHAssert
Stub GenericPrint -> Hugs.GenericPrint
Stub HugsInternals -> Hugs.Internals
Copy HugsLibs.hs
Stub IOExtensions -> Hugs.IOExts
Copy Interact.hs
Copy ListUtils.hs
Copy Number.hs
Copy ParseLib.hs
Stub Quote -> Hugs.Quote
Copy StdLibs.hs
Stub Trace -> Debug.Trace
Stub Trex -> Hugs.Trex
env HUGSDIR='../hugsdir' HUGSFLAGS='' ./ffihugs +G
+L'../hugsdir/libraries/Hugs/Storable_aux.c' Hugs.Storable
runhugs: Error occurred
ERROR "../hugsdir/libraries/Data/List.hs":197 - Syntax error in fixity decl
(unexpected backslash (lambda))


make: *** [../hugsdir/libraries/Hugs/Storable.so] Error 1

!!! ERROR: dev-lang/hugs98-2003.11 failed.
!!! Function src_compile, Line 62, Exitcode 2
!!! (no error message)



Portage 2.0.50-r11 (gcc34-x86-2004.2, gcc-3.4.2, glibc-2.3.4.20040916-r0,
2.6.8.1-mm4)
=================================================================
System uname: 2.6.8.1-mm4 i686 Intel(R) Pentium(R) M processor 1600MHz
Gentoo Base System version 1.4.16
distcc 2.16 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled]
ccache version 2.3 [enabled]
Autoconf: sys-devel/autoconf-2.59-r4
Automake: sys-devel/automake-1.8.5-r1
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
COMPILER=""
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config
/usr/kde/3.3/share/config:/usr/kde/3.3/env:/usr/kde/3.3/shutdown
/usr/kde/3/share/config /usr/share/config /usr/share/texmf/dvipdfm/config/
/usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/
/usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer
-fvisibility-inlines-hidden"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs ccache digest distcc sandbox"
GENTOO_MIRRORS="http://ftp.snt.utwente.nl/pub/os/linux/gentoo"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://feegle/gentoo-portage"
USE="3dnow X acpi alsa apm arts avi berkdb bitmap-fonts bluetooth cdr crypt
cups
dvd dvdr encode esd foomaticdb gdbm gif gtk gtk2 imlib javascript jpeg kde
libg++ libwww mad mikmod mime mmx mng motif mpeg ncurses nls no_wxgtk1 nowin
nptl oggvorbis ooo-kde opengl oss pam pcmcia pdflib perl png pnp python qt
quicktime radeon readline rtc samba sdlslang spell sse ssl svga tcpd tetex tiff
truetype usb vim-with-x wifi x86 xine xml2 xmms xprint xv xvid zlib"

It is definitely a gcc-3.4 issue. I tried compiling it with gcc-3.3 and it
worked fine.

I also had to switch to  gcc 3.3.x to get hugs to compile (manually, not with
the ebuild), but I made some attempt to fix it first

Going to the line that the error occurs on and removing the \ and then running
make again allows the compilation to go further (unless you do a make clean
first, in which case you're back to square one), but it still fails in the same
file, this time with a hugs/haskell error (a syntax error about a ;, "possibly
due to bad layout")

I'll have another go and fixing it as soon as I can, but this might help
someone else figure out what the problem is in the meantime

Ok, I've found out how to fix the problem (sort of) - instead of removing the \
line 197 you need to add another one (so you have \\), and then run make again
and hugs should compile with gcc 3.4.x 

Before you run make for the first time, the file lives at
hugs98-Nov2003/fptools/libraries/base/Data/List.hs, which is correct (it has
infix 5 \\, and not infix 5 \, though it's on line 212). I'll try adding a
third \ to the line in this file when I get home (I'm doing this remotely and
so only have access to gcc 2.95.3)

If any of the gcc-porting people see this, any input as to why this happens and
how to fix it without manually chaning the file after make fails and then
re-running make would be appreciated

Created an attachment (id=42855) [edit]
hugs98-2003.11-gcc-3.4.patch

Yep, the extra / does the trick :)

Well, I meant \ instead of /, but you get the point :P

Created an attachment (id=42857) [edit]
hugs-gcc34.patch

Created an attachment (id=42858) [edit]
updated hugs98-2003.11.ebuild

The patch I added (hugs-gcc34.patch) and the updated ebuild mean that anyone
wanting to emerge hugs using gcc 3.4.x can put the ebuild in their overlay, and
the patch in the files directory for hugs there, and it should work

I have tested and commited this patch, as it certainly seems harmless enough.

Hi!

Emerging hugs98 on amd64 with the above patches fails:

[...]
Stub Trex -> Hugs.Trex
env HUGSDIR='../hugsdir' HUGSFLAGS='' ./ffihugs +G +L'../hugsdir/libraries/Hugs/Storable_aux.c' Hugs.Storable
make: *** [../hugsdir/libraries/Hugs/Storable.so] Error 1

!!! ERROR: dev-lang/hugs98-2003.11 failed.
!!! Function src_compile, Line 70, Exitcode 2
!!! (no error message)


Any hint?

Sincerely,
Gour