Re: Andreas Seltenreich 2015-09-13 <87si6i1875....@credativ.de> > I managed disassemble RecordNewMultiXact from the core dump using a > cross-binutils, and it reveals that the compiler[1] appears to have > indeed generated a signed division here. I'm attaching a piece of C > code that does the same computation as the assembly (I think), as well > as the disassembly itself. > > Footnotes: > [1] Sun C 5.12 SunOS_sparc Patch 148917-07 2013/10/18, 64-bit
Hi, a short update here: the customer updated the compiler to a newer version, is now compiling using -O2 instead of -O3, and the code generated now looks sane, so this turned out to be a compiler issue. (Though it's unclear if the upgrade fixed it, or the different -O level.) Thanks to all who provided feedback, it was very valuable in actually tracking down the root of the issue. Christoph -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
