Hey Stephen!

might be worth sharing with clang team, don't you think?

Have you tried to disable packet-parlay to check whether it is the only
dissector creating such an issue?


Regards,
Sebastien Tandel

On Thu, Apr 21, 2011 at 16:30, Stephen Fisher <[email protected]>wrote:

> I'm trying again to get clang to compile Wireshark and after commenting
> out these two lines in configure.in temporarily:
>
>    AC_WIRESHARK_GCC_CFLAGS_CHECK(-Wcast-align)
>    AC_WIRESHARK_GCC_CFLAGS_CHECK(-fexcess-precision=fast)
>
> It gets all of the way to plugins/giop/packet-parlay.c and then clang
> core dumps!  Is anyone else having this problem?  This is a FreeBSD
> 8.2-RELEASE (amd64) system.  It probably doesn't help that
> packet-parlay.c is 108,692 lines long...
>
>
> Making all in giop
> gmake[3]: Entering directory
> `/usr/local/src/wireshark-clang/plugins/giop'
> /bin/bash ../../libtool  --tag=CC   --mode=compile clang -DHAVE_CONFIG_H
> -I. -I../.. -I../..  -I/usr/local/include -I/usr/include/pcap
> -I/usr/include  '-DPLUGIN_DIR="/usr/local/lib/wireshark/plugins/1.5.2"'
> -DINET6 -D_U_="__attribute__((unused))" -g -O2 -Wall -W
> -Werror=unknown-warning-option -Wextra -Werror=unknown-warning-option
> -Wdeclaration-after-statement -Werror=unknown-warning-option
> -Wendif-labels -Werror=unknown-warning-option -Wpointer-arith
> -Werror=unknown-warning-option -Wno-pointer-sign
> -Werror=unknown-warning-option -Wformat-security
> -Werror=unknown-warning-option -I/usr/local/include -D_THREAD_SAFE
> -D_REENTRANT -I/usr/local/include/gtk-2.0
> -I/usr/local/lib/gtk-2.0/include -I/usr/local/include/atk-1.0
> -I/usr/local/include/cairo -I/usr/local/include/gdk-pixbuf-2.0
> -I/usr/local/include/pango-1.0 -I/usr/local/include/gio-unix-2.0/
> -I/usr/local/include -I/usr/local/include/glib-2.0
> -I/usr/local/lib/glib-2.0/include -I/usr/local/include/pixman-1
> -I/usr/local/include/freetype2   -I/usr/include/pcap -I/usr/include  -MT
> packet-parlay.lo -MD -MP -MF .deps/packet-parlay.Tpo -c -o
> packet-parlay.lo packet-parlay.c
> libtool: compile:  clang -DHAVE_CONFIG_H -I. -I../.. -I../..
> -I/usr/local/include -I/usr/include/pcap -I/usr/include
> -DPLUGIN_DIR=\"/usr/local/lib/wireshark/plugins/1.5.2\" -DINET6
> "-D_U_=__attribute__((unused))" -g -O2 -Wall -W
> -Werror=unknown-warning-option -Wextra -Werror=unknown-warning-option
> -Wdeclaration-after-statement -Werror=unknown-warning-option
> -Wendif-labels -Werror=unknown-warning-option -Wpointer-arith
> -Werror=unknown-warning-option -Wno-pointer-sign
> -Werror=unknown-warning-option -Wformat-security
> -Werror=unknown-warning-option -I/usr/local/include -D_THREAD_SAFE
> -D_REENTRANT -I/usr/local/include/gtk-2.0
> -I/usr/local/lib/gtk-2.0/include -I/usr/local/include/atk-1.0
> -I/usr/local/include/cairo -I/usr/local/include/gdk-pixbuf-2.0
> -I/usr/local/include/pango-1.0 -I/usr/local/include/gio-unix-2.0/
> -I/usr/local/include -I/usr/local/include/glib-2.0
> -I/usr/local/lib/glib-2.0/include -I/usr/local/include/pixman-1
> -I/usr/local/include/freetype2 -I/usr/include/pcap -I/usr/include -MT
> packet-parlay.lo -MD -MP -MF .deps/packet-parlay.Tpo -c packet-parlay.c
> -fPIC -DPIC -o .libs/packet-parlay.o
> packet-parlay.c:85746:13: warning: unused function
> 'decode_org_csapi_fw_TpLoadPolicy_st' [-Wunused-function]
> static void decode_org_csapi_fw_TpLoadPolicy_st(tvbuff_t *tvb _U_,
> packet_info *pinfo _U_, proto_tree *tree _U_, int *offset _U_,
> MessageHeader ...
>            ^
> packet-parlay.c:85824:13: warning: unused function
> 'decode_org_csapi_fw_TpLoadInitVal_st' [-Wunused-function]
> static void decode_org_csapi_fw_TpLoadInitVal_st(tvbuff_t *tvb _U_,
> packet_info *pinfo _U_, proto_tree *tree _U_, int *offset _U_,
> MessageHeader ...
>            ^
> clang: error: clang frontend command failed due to signal 4 (use -v to
> see invocation)
> gmake[3]: *** [packet-parlay.lo] Error 1
> gmake[3]: Leaving directory
> `/usr/local/src/wireshark-clang/plugins/giop'
> gmake[2]: *** [all-recursive] Error 1
> gmake[2]: Leaving directory `/usr/local/src/wireshark-clang/plugins'
> gmake[1]: *** [all-recursive] Error 1
> gmake[1]: Leaving directory `/usr/local/src/wireshark-clang'
> gmake: *** [all] Error 2
>
> >gdb clang plugins/giop/clang.core
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> This GDB was configured as "amd64-marcel-freebsd"...(no debugging
> symbols found)...
> Core was generated by `clang'.
> Program terminated with signal 4, Illegal instruction.
> Reading symbols from /lib/libthr.so.3...(no debugging symbols
> found)...done.
> Loaded symbols for /lib/libthr.so.3
> Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols
> found)...done.
> Loaded symbols for /usr/lib/libstdc++.so.6
> Reading symbols from /lib/libm.so.5...(no debugging symbols
> found)...done.
> Loaded symbols for /lib/libm.so.5
> Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols
> found)...done.
> Loaded symbols for /lib/libgcc_s.so.1
> Reading symbols from /lib/libc.so.7...(no debugging symbols
> found)...done.
> Loaded symbols for /lib/libc.so.7
> Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols
> found)...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x000000000152326f in llvm::LazyValueInfo::getConstant ()
> [New Thread 8024041c0 (LWP 100063)]
> (gdb) bt 5
> #0  0x000000000152326f in llvm::LazyValueInfo::getConstant ()
> #1  0x0000000001524c42 in llvm::LazyValueInfo::getConstant ()
> #2  0x0000000001523508 in llvm::LazyValueInfo::getConstant ()
> #3  0x0000000001524c42 in llvm::LazyValueInfo::getConstant ()
> #4  0x0000000001523508 in llvm::LazyValueInfo::getConstant ()
> (More stack frames follow...)
> (gdb)
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