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

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Fri, 12 Oct 2001 02:44:41 -0700

Bugs item #467145, was opened at 2001-10-02 05:10 You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=105470&aid=467145&group_id=5470

Category: Build Group: Python 2.2

Status: Open Resolution: Fixed Priority: 5 Submitted By: Richard Townsend (rptownsend) Assigned to: Tim Peters (tim_one) 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.

Comment By: Martin v. L�wis (loewis) Date: 2001-10-12 02:44

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Re-opening; this probably needs to be investigated.

Comment By: Richard Townsend (rptownsend) Date: 2001-10-12 01:30

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I have built from the current CVS and it builds OK and 'make test' does not produce any failures.

Please note I'm now getting some new warnings for typeobject.c which I didn't get in Python-2.2a4 - see attached file 'Make.txt'.

Comment By: Tim Peters (tim_one) Date: 2001-10-11 11:33

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Reassigned to me and Closed as Fixed, but it would be very helpful if you could build from current CVS to confirm the fix on your platform (I'm using a union trick to force the GC header to have no-looser-than-double alignment, which should also help on platforms that don't require 8-byte double alignment but run faster if doubles are 8-byte aligned).

Include/objimpl.h; new revision: 2.43 Modules/gcmodule.c; new revision: 2.24

Comment By: Richard Townsend (rptownsend) Date: 2001-10-11 06:10

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Yes that fixes it, test_descr.py now runs OK.

From our experiments, I can confirm sizeof(long) == 4 and a double does require 8-byte alignment on HP-UX 11.00.

I also ran 'make test' again and now get no failures.

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:

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).

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

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Oops, forgot to check the box...

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).

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...

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?

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.

Comment By: Martin v. L�wis (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".

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.

Comment By: Martin v. L�wis (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.

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.

You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=105470&aid=467145&group_id=5470