https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70646
--- Comment #24 from Josh Poimboeuf <jpoimboe at redhat dot com> --- (In reply to Martin Jambor from comment #23) > (In reply to Josh Poimboeuf from comment #20) > > Thanks very much to everyone who has looked into this so far. It would be > > very helpful to get answers to the following questions, so we can understand > > the impact to the kernel: > > > > 1) Is there a reliable way to avoid the bug, either in code or with a gcc > > flag? > > If you mean in general, then unfortunately no, except for disabling > inlining altogether and removing all always_inline's. In addition to > the main bug, I found out that I check --param ipa-max-agg-items only > after incrementing it, so even setting that to zero does not help. > I'll prepare a patch for that too. Yes, I'm looking for a general way to either prevent or try to detect potential other cases of the bug throughout the entire kernel. Can it only occur with the use of __builtin_constant_p(exp) by an inline function (where exp is a constant)?
