http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c1 Christopher O'Brien changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |obriencj@gmail.com --- Comment #1 from Christopher O'Brien --- Hello, I'm the original developer of Meanwhile. This issue has sprung up before, and in the past is has been due to compiler optimizations used in the meanwhile library's build. See for example: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815045#10 using -O2 may cause it to break. using -fno-tree-vrp appears to fix it. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c3 --- Comment #3 from Jimmy Berry --- (In reply to Christopher O'Brien from comment #2)

Maintainer appears to be

What was the reason I was cc'd? Or was that unintentional? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c11 Alexei Sorokin changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |robert.koktan@suse.com --- Comment #11 from Alexei Sorokin --- *** Bug 1100889 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c13 --- Comment #13 from Felix Zhang --- Sorry, I may have misread the solution and it appears the compiler flag should rather be added to meanwhile. Please ignore the noise in comment 12. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 Alexei Sorokin changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sor.alexei@meowr.ru Assignee|wstephenson@suse.com |sor.alexei@meowr.ru -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c16 --- Comment #16 from Alexei Sorokin --- I found https://numbersandshapes.net/2012/06/number-theoretic-computations-in-c and the follow-up https://numbersandshapes.net/2012/06/speeds-of-c-libraries-for-number-theory, where the author compares various multi-precision integer libraries in how they perform mp_exptmod / mpz_powm, which appears to be exactly what libmeanwhile is using an MPI for. What the author finds is that GMP and MPIR both perform pretty well whilst LibTomMath is way-way slower. So I tried myself, and after adapting the original code to LibTomMath, 6 years later, I confirm the same finding – LibTomMath is very much slower at this operation than GMP and MPIR. But the bundled with libmeanwhile src/mpi/ is more than twice slower than even LibTomMath. So there's that. The choice of LibTomMath has been made for the patch just because it's API-compatible with src/mpi/, making the conversion safer and much easier, and because apparently GMP will force libmeanwhile to be LGPLv3+… Christopher O'Brien, I wonder why haven't you used GMP back then, as GMP seems to be just better for the job, and it used to be licensed like meanwhile does :-). -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c18 --- Comment #18 from Alexei Sorokin ---

There's flags to allow either GMP or lib_mpi, with some macros to pick one at compile time. At the time, I found certain distributions weren't bundling a working gmp, so I provided a simple fall-back implementation instead.

Christopher O'Brien, There's definitely no GMP around in 1.0.2 so I was not aware that it was ever there O_o.

These days it's certainly best to just use whatever is bundled.

Not sure what you mean by that… After all, the bundled code is exactly what broke :-). I guess LibTomMath is the safest bet though, as it's the one that was confirmed to properly work by someone who has a Sametime server around. The least risky solution. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 http://bugzilla.opensuse.org/show_bug.cgi?id=1086826#c20 Andreas Stieger changed: What |Removed |Added ---------------------------------------------------------------------------- Status|IN_PROGRESS |NEW CC| |astieger@suse.com, | |wstephenson@suse.com Assignee|sor.alexei@meowr.ru |wstephenson@suse.com --- Comment #20 from Andreas Stieger --- https://build.opensuse.org/request/show/627470 Assigning to SLE bugowner, please fix via SLE maintenance -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1086826 Jimmy Berry changed: What |Removed |Added ---------------------------------------------------------------------------- CC|jberry@suse.com | -- You are receiving this mail because: You are on the CC list for the bug.