[Bug nptl/842] New: getpid() not working with statically linking

[Bug nptl/842] New: getpid() not working with statically linking

[egmont at uhulinux dot hu]

I have a simple program (attached) that only performs a getpid() call and prints 
its return value. This works perfectly if I link it dynamically, but returns 
constant 5 if it's statically linked.

egmont $ gcc -Wall -O2 -o getpid getpid.c
egmont $ ./getpid ; ./getpid
4166
4167
egmont $ gcc -Wall -O2 -static -o getpid getpid.c
egmont $ ./getpid ; ./getpid
5
5

According to strace, the getpid() system call is not executed at all in the 
second case. So I have a feeling that perhaps the internal cache for the PID 
might remain uninitialized.

Details concerning glibc:

I tried and faced this bug with two different version, one is 20041021T0701 as 
found inside the Fedora Core 3 source RPM (but I did not use the Fedora binary, 
I recompiled their cvs snapshot source tarball, without using their additional 
tarballs or patches), the other version is the official 2.3.5 tarball. How I 
compiled:

rm -rf linuxthreads linuxthreads_db
cd /path/to/objectdir
/path/to/source/configure \
  --with-tls --enable-add-ons \
  --prefix=/usr --sysconfdir=/etc --localstatedir=/var \
  --mandir=/usr/share/man --infodir=/usr/share/info \
  --enable-shared \
  --build=i586-uhu-linux --host=i586-uhu-linux
make user-defined-trusted-dirs=/usr/local/lib

So I have absolutely no sign of linuxthreads, only nptl, installed directly to
/lib (.so) and /usr/lib (.a). No subdirectory under /lib or /usr/lib that 
contains any libc-related files (that is, no subdirectory called i?86, tls, nptl 
or similar) exists. /usr/lib/libc.a is definitely nptl-version, an "nm" on it 
shows two __nptl_... symbols.

I have found several issues with getpid() on the net, including this bugzilla, 
all related to nptl, but all those I've found are said to be already fixed, 
however, this one is misbehaving for me right now.

On the other hand, the getppid() call always works perfectly for me.

Other details:

$ scripts/config.guess # from glibc's source
i686-pc-linux-gnu
$ uname -a
Linux bobek 2.6.9-19 #1 SMP Thu Jan 27 08:52:43 CET 2005 i686 unknown unknown 
UHU-Linux
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i586-uhu-linux/3.3.4/specs
Configured with: /var/uhubuild/work/compile/configure --prefix=/usr --infodir=/
usr/share/info --mandir=/usr/share/man --enable-languages=c,c++,objc,java,f77,
pascal --enable-shared --with-gnu-as --with-gnu-ld --with-system-zlib --
host=i586-uhu-linux
Thread model: posix
gcc version 3.3.4
$ ld -v
GNU ld version 2.15

-- 
           Summary: getpid() not working with statically linking
           Product: glibc
           Version: 2.3.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nptl
        AssignedTo: drepper at redhat dot com
        ReportedBy: egmont at uhulinux dot hu
                CC: glibc-bugs at sources dot redhat dot com


http://sources.redhat.com/bugzilla/show_bug.cgi?id=842

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[Bug nptl/842] getpid() not working with statically linking

[egmont at uhulinux dot hu]

------- Additional Comments From egmont at uhulinux dot hu  2005-04-12 11:28 -------
Created an attachment (id=455)
 --> (http://sources.redhat.com/bugzilla/attachment.cgi?id=455&action=view)
test case: getpid.c


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[Bug nptl/842] getpid() not working with statically linking

[jakub at redhat dot com]

------- Additional Comments From jakub at redhat dot com  2005-04-12 14:06 -------
Can't reproduce this, with glibc CVS (tried i686 and x86_64) nor
Fedora nptl-devel-2.3.4-2.fc3.4.

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[Bug nptl/842] getpid() not working with statically linking

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2005-09-26 14:36 -------
Works just fine.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME


http://sourceware.org/bugzilla/show_bug.cgi?id=842

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[Bug nptl/842] getpid() not working with statically linking

[egmont at uhulinux dot hu]

------- Additional Comments From egmont at uhulinux dot hu  2006-03-07 19:20 -------
It was still buggy for me with glibc-2.3.6 but now with 2.4 it's okay.
Thanks guys :)

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