On Thu, 2016-10-20 at 16:24 +0200, Marek Polacek wrote: > On Thu, Oct 20, 2016 at 10:11:55AM -0400, Jason Merrill wrote: > > On Wed, Oct 19, 2016 at 7:07 AM, Marek Polacek <pola...@redhat.com> > > wrote: > > > But since integer csts and various decls > > > don't carry location info, this works only partially, so the > > > warning > > > warns even for e.g. > > > > > > if (TREE_STATIC (node) || DECL_EXTERNAL (node)) > > > max_align = MAX_OFILE_ALIGNMENT; > > > else > > > max_align = MAX_STACK_ALIGNMENT; > > > > > > when MAX_OFILE_ALIGNMENT and MAX_STACK_ALIGNMENT represent the > > > same number. > > > There's no way to get around this, so the warning isn't enabled > > > by nor > > > -Wall neither -Wextra, and can't be until we solve the pesky > > > location > > > horror. (-Wduplicated-cond is off for the very same reason.) > > > > Is someone working on this? > > Not me, but I think David has been experimenting with this. David, > is that > correct?
I started looking at this, but it's unlikely that I'll have something ready for gcc 7 (have been focusing on the RTL frontend).
