On Tue, Jun 16, 2020 at 01:15:29AM +0200, Marco Elver wrote: > UBSAN is supported since GCC 4.9, which unfortunately did not yet have > __has_attribute(). To work around, the __GCC4_has_attribute workaround > requires defining which compiler version supports the given attribute. > > In the case of no_sanitize_undefined, it is the first version that > supports UBSAN, which is GCC 4.9. > > Reported-by: kernel test robot <[email protected]> > Signed-off-by: Marco Elver <[email protected]> > --- > > Doing a 'make W=1' with GCC 4.9 and the provided config fixes the build > robot's report. > > Peter: Feel free to either squash this patch into the one adding > __no_sanitize_undefined or apply on top.
Yeah, argh! So I only saw this thread now, even though I'd already pushed out x86/entry to tip last night due to getting: 301805 N + Jun 16 kernel test rob (5.8K) [peterz-queue:x86/entry] BUILD SUCCESS 8e8bb06d199a5aa7a534aa3b3fc0abbbc11ca438 Why that thing is claiming SUCCESS when it introduces a build error I don't know. Anyway, let me go push this thing on top.
