On Fri, Oct 05, 2012 at 08:41:40AM +0200, Robert Schwebel wrote: > On Tue, Oct 02, 2012 at 10:49:13PM +0200, Tim Sander wrote: > > Sorry for the off topic post, > > Traditionally, OSELAS.Toolchain questions are on-topic on this list :-) > > > but as we are talkin toolchains over here: I've got the impression > > that the latest stable release of the toolchain > > OSELAS-Toolchain-2011.11.3 miscompiles on i.mx35?! I just tried to > > compile some stuff and the kernel dumped strange lock error oopses and
This sounds more like the new compiler changed the timing and exposed a kernel bug. > > our user application had some strange behaviour i couldn't explain: > > Some function calls where missed in an unconditional codepath. > > OSELAS.Toolchain-2011.03.1 works but sometimes i just try newer > > toolchains to shake out bugs in the code. So there is no urge on our > > side. But as there have been reports on misscompiles on arm lkml with > > gcc i thought i might bring that to attention? The only thing I've head of is was an issue in the flexcan driver, and that was one of the reasons for the v2011.11.3 release > Do you have proper error messages, code examples or test cases? > > I havn't heared of problems with the arm11 toolchain recently. We > currently have problems with floating point / NEON with the cortex-a8 > toolchain (sometimes floating point registers contain wrong values), but > this is not debugged yet. btw, this was a kernel bug. Michael -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- ptxdist mailing list [email protected]
