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We haven't seen any agreement emerge as to what is causing AIX 5.3 ML3 

to fail to successfully build the release candidates.

However, a patch has emerged (thanks, Seneca!) that does allow it to
work, and which I'd expect to be portable (better still!).

We are still actively pursuing why it breaks, but supposing that still
remains outstanding, at least the following would allow AIX users to
better survive a build...

Chris Browne
This commit is contained in:
Bruce Momjian 2005-11-04 18:16:50 +00:00
parent c3d8de0907
commit 081ed99b1e
1 changed files with 62 additions and 2 deletions
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@ -1,5 +1,5 @@
From: Zeugswetter Andreas <ZeugswetterA@spardat.at>
$Date: 2005/10/24 22:30:35 $
$Date: 2005/11/04 18:16:50 $
On AIX 4.3.2 PostgreSQL compiled with the native IBM compiler xlc
(vac.C 5.0.1) passes all regression tests. Other versions of OS and
@ -99,7 +99,7 @@ Closed date 2005-07-18
Last modified date 2005-09-06
If you upgrade to maintenance level 5300-03, that will include this
fix. Use the command "oslevel -r" to determine what maintenance level
fix. Use the command "oslevel -r" to determine what maintenance level
you are at.
---
From: Christopher Browne <cbbrowne@ca.afilias.info>
@ -113,3 +113,63 @@ libraries, the following URLs may help you...
http://www.faqs.org/faqs/aix-faq/part4/section-22.html
http://www.han.de/~jum/aix/ldd.c
---
From: Christopher Browne <cbbrowne@ca.afilias.info>
Date: 2005-11-02
On AIX 5.3 ML3 (e.g. maintenance level 5300-03), there is some problem
with the handling of the pointer to memcpy. It is speculated that
this relates to some linker bug that may have been introduced between
5300-02 and 5300-03, but we have so far been unable to track down the
cause.
At any rate, the following patch, which "unwraps" the function
reference, has been observed to allow PG 8.1 pre-releases to pass
regression tests.
The same behaviour (albeit with varying underlying functions to
"blame") has been observed when compiling with either GCC 4.0 or IBM
XLC.
------------ per Seneca Cunningham -------------------
The following patch works on the AIX 5.3 ML3 box here and didn't cause
any problems with postgres on the x86 desktop. It's just a cleaner
version of what I tried earlier.
*** dynahash.c.orig Tue Nov 1 19:41:42 2005
--- dynahash.c Tue Nov 1 20:30:33 2005
***************
*** 670,676 ****
/* copy key into record */
currBucket->hashvalue = hashvalue;
! hashp->keycopy(ELEMENTKEY(currBucket), keyPtr, keysize);
/* caller is expected to fill the data field on return */
--- 670,687 ----
/* copy key into record */
currBucket->hashvalue = hashvalue;
! if (hashp->keycopy == memcpy)
! {
! memcpy(ELEMENTKEY(currBucket), keyPtr, keysize);
! }
! else if (hashp->keycopy == strncpy)
! {
! strncpy(ELEMENTKEY(currBucket), keyPtr, keysize);
! }
! else
! {
! hashp->keycopy(ELEMENTKEY(currBucket), keyPtr, keysize);
! }
/* caller is expected to fill the data field on return */
------------ per Seneca Cunningham -------------------