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binutils + xlc + POWER4 ==> Segmentation fault (core dumped)

francois.petitjean@bureauveritas.com francois.petitjean@bureauveritas.com
Mon Mar 26 15:54:00 GMT 2007 
On an AIX 5.2 machine (4 CPUs, 64 bits hardware but 32 bits kernel) I have
tried to compile binutils (the 2.17 release and the binutils-070315
snapshot).

configuration with :
fp2@halc10:/u/fp2/dev_c/binutils-070315 $ env AR=/usr/ccs/bin/ar
CC=/u/fp2/bin/mxlc ./configure --prefix=/opt/freeware --enable-commonbfdlib
--enable-shared --
d isable-static --disable-nls
checking build system type... powerpc-ibm-aix5.2.0.0
checking host system type... powerpc-ibm-aix5.2.0.0
checking target system type... powerpc-ibm-aix5.2.0.0
checking for a BSD-compatible install... /opt/freeware/bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
....
checking how to compare bootstrapped objects... cmp --ignore-initial=16
$$f1 $$f
2
*** This configuration is not supported in the following subdirectories:
     gprof
    (Any other directories should still work fine.)
checking for bison... bison -y
...
/u/fp2/bin/mxlc -c -DHAVE_CONFIG_H  -I. -I.././libiberty/../include
.././libib
erty/pex-common.c -o pex-common.o
".././libiberty/config.h", line 435.9: 1506-213 (S) Macro name inline
cannot be
redefined.
".././libiberty/config.h", line 435.9: 1506-358 (I) "inline" is defined on
line
182 of .././libiberty/../include/ansidecl.h.
make[2]: *** [pex-common.o] Error 1
make[2]: Leaving directory
`/net/ghzn8/homea/fp2/dev_c/binutils-070315/libiberty
'
make[1]: *** [all-libiberty] Error 2
To solve this, in libiberty I have modified config.in to add a double
include guard :
/* config.in.  Generated from configure.ac by autoheader.  */
#ifndef H_CONGIG_H
#define H_CONGIG_H
....
/* Define as `fork' if `vfork' does not work. */
#undef vfork

#endif  /* H_CONFIG_H */
I noticed also a warnig :
/u/fp2/bin/mxlc -c -DHAVE_CONFIG_H  -I. -I.././libiberty/../include
.././libiberty/regex.c -o regex.o
".././libiberty/regex.c", line 31.3: 1506-224 (I) Incorrect pragma ignored.
Modified :
#if defined _AIX && !defined __GNUC__ && !defined REGEX_MALLOC
#include <alloca.h>  /* #pragma alloca */
#endif
(See le /usr/include/alloca.h at the end of this message)

in binutils
...
creating size
/u/fp2/bin/mxlc -DHAVE_CONFIG_H -I. -I.././binutils -I. -D_GNU_SOURCE -I.
-I../.
/binutils -I../bfd -I.././binutils/../bfd -I.././binutils/../include
-DLOCALEDIR
="\"/opt/freeware/share/locale\"" -DREPORT_BUGS_TO="
\"<URL:http://www.sourceware
.org/bugzilla/>\"" -Dbin_dummy_emulation=bin_aix5_emulation     -c
-DAIX_WEAK_SU
PPORT .././binutils/objdump.c
".././binutils/objdump.c", line 2829.68: 1506-280 (E) Function argument
assignme
nt between types "void*" and "char*(*)(struct bfd*,const char*)" is not
allowed.

make[4]: *** [objdump.o] Error 1
if (! print_debugging_info (stdout, dhandle, abfd, syms, (void *)demangle,,


/u/fp2/bin/mxlc -DHAVE_CONFIG_H -I. -I.././binutils -I. -D_GNU_SOURCE -I.
-I.././binutils -I../bfd -I.././binutils/../bfd -I.././binutils/../include
-DLOCALEDIR="\"/opt/freeware/share/locale\"" -DREPORT_BUGS_TO="
\"<URL:http://www.sourceware.org/bugzilla/>\""
-Dbin_dummy_emulation=bin_aix5_emulation     -c prdbg.c
"prdbg.c", line 307.18: 1506-068 (E) Operation between types
"char*(*)(struct bfd*,const char*)" and "void*" is not allowed.
make[2]: *** [prdbg.o] Error 1
make[2]: Leaving directory
`/net/ghzn8/homea/fp2/dev_c/binutils-070315/binutils'
make[1]: *** [all-recursive] Error 1
fp2@halc10:/u/fp2/dev_c $ cat /tmp/prdbg.patch
--- binutils-070315/binutils/prdbg.c    2006-09-28 14:59:25.000000000 +0200
+++ binutils-070315/binutils/prdbg.n.c  2007-03-26 15:18:46.000000000 +0200
@@ -34,6 +34,7 @@
 #include "budbg.h"

 /* This is the structure we use as a handle for these routines.  */
+typedef  char *(*demangler_fn) (bfd *, const char *);

 struct pr_handle
 {
@@ -53,7 +54,8 @@
   /* The symbols table for this BFD.  */
   asymbol **syms;
   /* Pointer to a function to demangle symbols.  */
-  char *(*demangler) (bfd *, const char *);
+/*  char *(*demangler) (bfd *, const char *); */
+  demangler_fn  demangler;
 };

 /* The type stack.  */
@@ -304,7 +306,7 @@
   info.filename = NULL;
   info.abfd = abfd;
   info.syms = syms;
-  info.demangler = demangler;
+  info.demangler = (demangler_fn) demangler;

   if (as_tags)
     {
fp2@halc10:/u/fp2/dev_c $ cd binutils-070315/binutils/


And now the most intersting part :
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ ./size --version
GNU size (GNU Binutils) 070315.20070315
Copyright 2007 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty.
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ l .libs/
sh: l: command not found
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ alias l='ls -lApst'
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ alias l='ls
-lApst'..............
......[11Pl .libs/
total 2284
  60 -rwxr-xr-x    1 fp2      staff       59303 Mar 26 14:35 lt-size
 148 -rwxr-xr-x    1 fp2      staff      149303 Mar 26 14:34 cxxfilt
 456 -rwxr-xr-x    1 fp2      staff      466804 Mar 26 14:34 strip-new
 176 -rwxr-xr-x    1 fp2      staff      178945 Mar 26 14:34 nm-new
 152 -rwxr-xr-x    1 fp2      staff      153761 Mar 26 14:33 addr2line
 456 -rwxr-xr-x    1 fp2      staff      466778 Mar 26 14:33 objcopy
  96 -rwxr-xr-x    1 fp2      staff       96643 Mar 26 14:33 ranlib
  56 -rwxr-xr-x    1 fp2      staff       57292 Mar 26 14:33 strings
  96 -rwxr-xr-x    1 fp2      staff       96617 Mar 26 14:33 ar
 528 -rwxr-xr-x    1 fp2      staff      540178 Mar 26 14:33 objdump
  60 -rwxr-xr-x    1 fp2      staff       59281 Mar 26 13:36 size
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ ./size  .libs/size
Segmentation fault (core dumped)

fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ /usr/bin/size .libs/size
.libs/size: 23024 + 4280 + 120 + 3922 = 31346

fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ cc -o size2 size.o
bucomm.o version.o filemode.o -L../bfd/.libs -lbfd ../libiberty/libiberty.a
-blibpath:/u/fp2/dev_c/binutils-070315/bfd/.libs:/usr/lib:/lib
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ l size2
  60 -rwxr-xr-x    1 fp2      staff       59303 Mar 26 14:55 size2
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ ./size2 size2
Segmentation fault (core dumped)
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ ./size2 --version
GNU size (GNU Binutils) 070315.20070315
Copyright 2007 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty.
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ dbx size2
Type 'help' for help.
[using memory image in core]
reading symbolic information ...warning: no source compiled with -g


Segmentation fault in objalloc_create at 0xd34ff880
0xd34ff880 (objalloc_create+0x8) 800c0000        lwz   r0,0x0(r12)
(dbx) where
objalloc_create() at 0xd34ff880
_bfd_new_bfd() at 0xd34f9a74
bfd_fopen() at 0xd34fac94
display_file() at 0x100013d8
main() at 0x10000744
(dbx) ^D

(dbx) quit

Here is the content of the mxlc script :
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ cat /u/fp2/bin/mxlc
#!/bin/sh

# mxlc  front end à xlc pour faire croire à configure que xlc -g nest pas
acceptable

for option
do
   if test "$option" = "-g"; then
      echo '1506-173 (W) Option -g is not valid. Enter xlc for list of
valid options.'
      exit 2
   fi
   if test "$option" = "--version"; then
      echo 'VisualAge C++ Professional / C for AIX Compiler, Version 6'
      exit 0
   fi
   if test "$option" = "-v"; then
      echo 'VisualAge C++ Professional / C for AIX Compiler, Version 6'
      exit 0
   fi
   if test "$option" = "-V"; then
      echo 'VisualAge C++ Professional / C for AIX Compiler, Version 6'
      exit 0
   fi
done

pgm="/usr/vacpp/bin/cc -O3 -qstrict -qarch=rs64c -qtune=rs64c -qhalt=e
-qlanglvl=ansi -qmaxerr=1"
# pgm="/usr/vacpp/bin/cc -O3 -qstrict -qarch=rs64c -qtune=rs64c -qhalt=e
-qlanglvl=ansi -qwarn64"

# xeq=exec

exec $pgm $@
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $

I must say that the values for -qarch and -qtune were obtained by running
the hwinfo program in the examples of the "AIX 5L porting guide" (a redbook
sg246034.pdf).
The -qwarn64 option produces a lot of warnings, and it is impossible to
compile binutils as a 64 bits library : with -q64 option, the __64BIT__
symbol is defined ans some 32 bits structures are not defined and
bfd/rs6000-core.c needs them.

The configure option  --enable-commonbfdlib  is not listed in --help (in
the top level directory) but only in the bfd/.. sub directories.

fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $ cat
/usr/include/alloca.h
/* IBM_PROLOG_BEGIN_TAG
*/
/* This is an automatically generated prolog.
*/
....
/* IBM_PROLOG_END_TAG
*/
/* @(#)78  1.1  src/bos/usr/include/alloca.h, incsys, bos520 3/6/01
08:38:39 */

#ifndef _H_ALLOCA
#define _H_ALLOCA
#include <sys/types.h>


#ifdef __cplusplus
extern "C" {
#endif

#ifdef  __GNUC__
/* Remove any previous definitions.  */
#undef  alloca

#define alloca(size)   __builtin_alloca (size)

#else /* xlc */

#pragma alloca

#endif /* GCC.  */

#ifdef __cplusplus
}
#endif

#endif /* _H_ALLOCA */
fp2@halc10:/u/fp2/dev_c/binutils-070315/binutils $

Please note that on AIX 5L the souece libiberty/alloca.c is not needed.

Regards.

PS: sorry for bad english.
PS2 : By reading the following warning you will understand that it is
impossible to access a cvs repository and please consider to move to
subversion with a HTTP/Webdav access.
PS3 : I had some hope when seeing a power4 related modification in the
Changelog but it seems that the problem reamains.



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