RedHat Itanium 64 GCC 3.2.3 linking problems

RedHat Itanium 64 GCC 3.2.3 linking problems

[sheetal fegde]

Hi,

I am facing some problem while linking using gcc-3.2.3

Machine Information
RedHat  IA64
Linux  2.4.21-4.EL #1 SMP Fri Oct 3 17:29:39 EDT 2003
ia64 ia64 ia64 GNU/Linux

g++/gcc information
> gcc -v
 Reading specs from
/usr/lib/gcc-lib/ia64-redhat-linux/3.2.3/specs
 Configured with: ../configure --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --
enable-__cxa_atexit --host=ia64-redhat-linux
 Thread model: posix
 gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-20)

>g++- v
Reading specs from
/usr/lib/gcc-lib/ia64-redhat-linux/3.2.3/specs
Configured with: ../configure --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--enable-shared --enable-threads=posix
--disable-checking --with-system-zlib
--enable-__cxa_atexit --host=ia64-redhat-linux
Thread model: posix
gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-20)


I am trying to build some application with oracle oci,
while linking I am getting following errors.
I feel there is no worng with my code as it works with
gcc 2.96, when i try with 3.2.3 it gives following
problems..

gcc  -c -g -Wno-deprecated -DROGUE6 -DRW_MLS_LIBRARY
-DUSE_SOURCEPRO
-D_RWCONFIG_LINUXGCC323K2421DEBUG_NtvSTL_NoThr_64bit_sd
-DFULL_ORACLE8OCI -DOBT -DREMOTE_HOST_BACKUP -DLINUX
-DDEBUGIO -D_GNU_SOURCE -D__LP64__   -I../oracle/mml 
-o /usr/oracle/OBTBld/obj/obacktrack/lib/mmlIO.o 
../oracle/mml/mmlIO.c 

DtCSharedArchive
/usr/oracle/OBTBld/obj/obacktrack/lib/libobk.so 

#	g++  -Xlinker -G  -static -g  -o 
/usr/oracle/OBTBld/obj/obacktrack/lib/libobk.so 
/usr/oracle/OBTBld/obj/obacktrack/lib/mml.o
/usr/oracle/OBTBld/obj/obacktrack/lib/mmlChlCommn.o
/usr/oracle/OBTBld/obj/obacktrack/lib/mmlIO.o  ;
	g++  -Xlinker -G   -o 
/usr/oracle/OBTBld/obj/obacktrack/lib/libobk.so 
/usr/oracle/OBTBld/obj/obacktrack/lib/mml.o
/usr/oracle/OBTBld/obj/obacktrack/lib/mmlChlCommn.o
/usr/oracle/OBTBld/obj/obacktrack/lib/mmlIO.o  ;

/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x31): In
function `__libc_csu_init':
: undefined reference to `__init_array_start'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x32): In
function `__libc_csu_init':
: undefined reference to `__init_array_end'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x40): In
function `__libc_csu_init':
: undefined reference to `__init_array_start'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x41): In
function `__libc_csu_init':
: undefined reference to `__init_array_end'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0xd1): In
function `__libc_csu_fini':
: undefined reference to `__fini_array_start'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0xe0): In
function `__libc_csu_fini':
: undefined reference to `__fini_array_end'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0xf0): In
function `__libc_csu_fini':
: undefined reference to `__fini_array_start'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0xf1): In
function `__libc_csu_fini':
: undefined reference to `__fini_array_end'
/usr/bin/ld:
/usr/oracle/OBTBld/obj/obacktrack/lib/libobk.so:
hidden symbol `__fini_array_end' isn't defined
collect2: ld returned 1 exit status

What is going wrong? I feel this some problem in
glibc.
can somebody help me on this.
Thanks,
Sheetal.



		
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Question on memcpy()

[Wen Guangcheng]

Hello Gurus,

I am trying to fix a bug in a  code. I found something like this,

struct sample A, B;
...
...
memset(&A, 0, sizeof(sample));
memcpy(&A, (char *)&B, sizeof(sample));
...
I could not understand why the second argument is (char *)&B, but not &B.
I think it should be &B. 

Sometimes I found A is all zero. but B is not all zero in fact.  
Is it due to the second argument (char *)&B?

Any comment is appreciated and thanks in advance.

Best regards,

--Wen