Messages in this thread | | | Date | Tue, 19 Aug 2014 22:19:58 +0200 | Subject | Re: [UML] 3.16 build without optimization fails | From | Thomas Meyer <> |
| |
Hi.
Thanks for your answer.
There goes my plan to better understand an UML kernel lock up by using a debugger... Everything gets optimised out with -O2 :-(
Can you give an example function that relies on this GCC feature?
With kind regards Thomas
Am 19.08.2014 22:06 schrieb Valdis.Kletnieks@vt.edu: > > On Tue, 19 Aug 2014 21:12:10 +0200, Thomas Meyer said: > > > Hi, > > > > > > the build with -O0 fails with: > > > > bug or feature? > > > > > > any ideas? > > Feature. The kernel is *known* to not build with -O0, because that > disables *all* function inlining, and there's several functions that *have* > to be inlined in order to function properly (most notably, anything > that uses the gcc __builtin_return_address in a function that is expected > to be inlined).
| |