pgsql: Install a workaround for a longstanding gcc bug that allows - Mailing list pgsql-committers

From tgl@postgresql.org (Tom Lane)
Subject pgsql: Install a workaround for a longstanding gcc bug that allows
Date
Msg-id 20090903184814.E159E753FB7@cvs.postgresql.org
Whole thread Raw
List pgsql-committers
Log Message:
-----------
Install a workaround for a longstanding gcc bug that allows SIGFPE traps
to occur for division by zero, even though the code is carefully avoiding
that.  All available evidence is that the only functions affected are
int24div, int48div, and int28div, so patch just those three functions to
include a "return" after the ereport() call.

Backpatch to 8.4 so that the fix can be tested in production builds.
For older branches our recommendation will continue to be to use -O1
on affected platforms (which are mostly non-mainstream anyway).

Modified Files:
--------------
    pgsql/src/backend/utils/adt:
        int.c (r1.84 -> r1.85)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/int.c?r1=1.84&r2=1.85)
        int8.c (r1.74 -> r1.75)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/int8.c?r1=1.74&r2=1.75)

pgsql-committers by date:

Previous
From: meskes@postgresql.org (Michael Meskes)
Date:
Subject: pgsql: Fixed incorrect memory management.
Next
From: tgl@postgresql.org (Tom Lane)
Date:
Subject: pgsql: Install a workaround for a longstanding gcc bug that allows