[Python-bugs-list] [ python-Bugs-467145 ] Python 2.2a4 build problem on HPUX 11.0

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Bugs item #467145, was opened at 2001-10-02 05:10
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Category: Build
Group: Python 2.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Richard Townsend (rptownsend)
Assigned to: Martin v. Löwis (loewis)
Summary: Python 2.2a4 build problem on HPUX 11.0

Initial Comment:
When compiling Python 2.2a4 on HP-UX 11.0 using the HP 
ansi C compiler, each source file generates an error 
like this:

        cc -Ae -Kpthread -c +DAportable -I. -
I./Include -DHAVE_CONFIG_H  -o Parser/acceler.o 
Parser/acceler.c
cc: warning 422: Unknown option "K" ignored.
cc: error 1400: Option t usage: -t c,name where c may 
be 1 or more of pc0al.


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>Comment By: Guido van Rossum (gvanrossum)
Date: 2001-10-11 03:18

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Thanks.  It looks like it's not happy with the alignment of
a pointer to double; in particular, it's in Number.__repr__
in function complexes(). I'm assuming that on your
architecture:

- sizeof(long) == 4
- a double requires 8-byte alignment

Then I believe I have a fix. Can you try this:

In Include/objimpl.h, in the structure PyGC_Head, after "int
gc_refs;" (line 272), insert another -- dummy -- int field,
e.g. "int dummy;".

Then recompile and re-run the test.

If this fixes the problem, I have some work to do, but it
would confirm my theory (that the alignment is botched
because the GC header moves the structure up 12 bytes).

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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-11 02:57

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Oops, forgot to check the box...

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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-11 02:55

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After doing a CVS update, test_descr.py still core dumps. 

See attached file Gdb.txt for the output from gdb (hope 
it's what you want).



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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-10 08:06

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I will try. 

However, there will be a delay as I do not have cvs access 
to the internet here at work. I will have to do the update 
from home and bring in the new files to build tomorrow :-(

Also, I'm not sure if we have gdb on the HP machines...



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Comment By: Guido van Rossum (gvanrossum)
Date: 2001-10-10 06:04

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Can you do a CVS update and run the test for test_descr.py
again? If it still core dumps, can you provide a stack trace
using gdb?

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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-10 02:38

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Thanks for the pointer.

I have downloaded the current CVS and it builds without the 
errors for '-Kpthread'. (It still fails to build the 
_curses extension by the way).

When I ran 'make test' it failed in test_descr.py [see 
attached file test.txt for output].

I then manually ran the following tests:
test_thread.py
test_threaded_import.py
test_threaded_tempfile.py
test_threading.py

and these all succeeded.



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Comment By: Martin v. Löwis (loewis)
Date: 2001-10-09 09:41

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Please have a look at

http://sourceforge.net/cvs/?group_id=5470

This has instructions for "Anonymous CVS Access".

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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-09 06:56

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I would be happy to try - please can you advise how to 
download the current CVS, I can only see the option to 
browse it and download individual files.



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Comment By: Martin v. Löwis (loewis)
Date: 2001-10-09 03:57

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Can you please try the current CVS and report whether it
also fixes the problem? The fix you've used was integrated
in a modified form.

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Comment By: Richard Townsend (rptownsend)
Date: 2001-10-04 08:10

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I have now tested the patch 
ftp://ftp.thewrittenword.com/outgoing/pub/python-
210665.patch with Python-2.2a4 and it fixes this problem.



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