Bug 38249 - JDK1.3 and JDK1.3..0_2 will not run
JDK1.3 and JDK1.3..0_2 will not run
Product: Red Hat Linux
Classification: Retired
Component: glibc (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Jakub Jelinek
Depends On:
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Reported: 2001-04-29 02:38 EDT by Chris Croswhite
Modified: 2008-05-01 11:38 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2001-04-30 13:45:30 EDT
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Description Chris Croswhite 2001-04-29 02:38:50 EDT
Sun's and Blackdown's java from jdk1.3 and jdk1.3.0_2 (Sun only) hang the 
terminal.  First, I had to place the libjvm.so (from 
jdk_inst_dir/jre/lib/i386/client/) into /usr/lib.  Then I ran java -
version from jdk_inst_dir/bin and the term just sits there.  A ps shows no 
activity to the associated java processes.  JDK1.2 seems to run fine.

I think this might be a good time to put in a plug from having Red Hat 
include a good reference java rather than that quassi knock-off called 
kaffe.  Come on guys!  You can package the jre in the distro not to 
mention Blackdown's implementation.
Comment 1 Rob Lembree 2001-04-29 21:31:18 EDT
I can confirm that this is a problem.  I'm going to have to downgrade because
of this problem.

rob lembree (lembree@metrolink.com)
Comment 2 Bill Nottingham 2001-04-29 22:15:35 EDT
Um, no we can't ship any JDK/JRE environments. The licenses prohibit
them, and they aren't open source anyway.

Did you try setting LD_ASSUME_KERNEL as specified in the release notes?
Comment 3 Rob Lembree 2001-04-30 00:30:47 EDT
Here are the results.

% /Work/jdk1.3/bin/java
/bin/sh: error while loading shared libraries: libdl.so.2: cannot load shared
object file: No such file or directory
Comment 4 Jakub Jelinek 2001-04-30 03:38:29 EDT
You should use
export LD_ASSUME_KERNEL=2.2.5
It is written in RELEASE-NOTES btw.
Comment 5 Rob Lembree 2001-04-30 13:45:26 EDT
 export LD_ASSUME_KERNEL=2.2.5 does indeed work around this problem.
What side-effects might this have on other things?   Are the release notes
available online?

Comment 6 Jakub Jelinek 2001-04-30 14:03:49 EDT
The effect of LD_ASSUME_KERNEL=2.2.5 is:
a) libc (libm, libpthread) no longer assume they run on kernel 2.4.1 and above
   (the assumption means some optimizations)
b) libpthread cannot use %gs register based threads, they use the stack pointer
   based fixed stack size threads
So basically it is mainly a performance issue, or if some threaded application
needs to use either smaller or larger stacks than 2MB (smaller so that it
can fit more threads into virtual memory).

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