Date: Thu, 6 Feb 2003 18:04:49 -0800 From: Arun Sharma <arun.sharma@intel.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ia64/48024: function pointer has different values in libraries vs main program Message-ID: <20030206180449.A9223@unix-os.sc.intel.com>
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>Number: 48024
>Category: ia64
>Synopsis: function pointer has different values in libraries vs main program
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-ia64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Feb 06 18:10:10 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: Arun Sharma
>Release: FreeBSD 5.0-CURRENT ia64
>Organization:
Myself
>Environment:
System: FreeBSD adsharma-ia64 5.0-CURRENT FreeBSD 5.0-CURRENT #3: Wed Jan 22 12:40:09 GMT 2003 adsharma@adsharma-ia64:/usr/src/sys/ia64/compile/bigsur ia64
>Description:
The program below prints different values for the value of &foo1, when called from a
shared lib vs main program.
>How-To-Repeat:
unshar
make
./main
>Fix:
Not known yet.
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# test
# test/foo.c
# test/main.c
# test/Makefile
#
echo c - test
mkdir -p test > /dev/null 2>&1
echo x - test/foo.c
sed 's/^X//' >test/foo.c << 'END-of-test/foo.c'
X#include <stdio.h>
X
Xint
Xfoo1()
X{
X}
X
Xint
Xfoo()
X{
X int (*fptr)();
X
X fptr = &foo1;
X
X printf("foo1 is at %lx: \n", foo1);
X}
END-of-test/foo.c
echo x - test/main.c
sed 's/^X//' >test/main.c << 'END-of-test/main.c'
X#include <stdio.h>
X
X
Xextern int foo1();
X
Xmain()
X{
X int (*fptr)();
X
X foo();
X fptr = &foo1;
X printf("foo1 is at %lx: \n", foo1);
X}
END-of-test/main.c
echo x - test/Makefile
sed 's/^X//' >test/Makefile << 'END-of-test/Makefile'
Xall:
X gcc -c -fPIC foo.c -o foo.o
X gcc -shared foo.o -o libfoo.so
X gcc main.c -L. -lfoo -o main
X
END-of-test/Makefile
exit
>Release-Note:
>Audit-Trail:
>Unformatted:
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