http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51921
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-02-07
17:12:26 UTC ---
> I'm quite upset about this because the only reason for that reversion
> he's given so far is a failure (I wouldn't call it regression) on a
> 7-year-old Solaris 10 beta release (or rather, one of many two-weekly
> builds). AFAICT, no released version is affected by my rewrite of
> sparc/sol2-unwind.h, which introduced Solaris 11 support before 4.6.0,
> which is now completely broken.
If you give me a proof that no released version whatsoever, from the very first
Solaris 8 to the very latest Solaris 10, can be affected by a regression due to
the rewrite of the pattern matching code, then I'd (reluctantly) accept the
breakage for the Solaris 10 beta.
> * If some AdaCore customer couldn't be bothered to upgrade to a release
> (I'm talking about any release here, not supported or latest) version
> of Solaris in 7 years, but needs to run bleeding-edge versions of GCC,
> I declare that AdaCore's problem, not mine. If the only ill effect of
> a patch of mine is to break such ancient beta versions (not
> intentionally or lightly), so be it. I'm not jumping through hoops to
> fix that.
Let's not misrepresent things, please. Enhancing the existing pattern matching
code is trivial: you find the first differing frame in the stack, and you add a
new 'else if' somewhere.
Again, this pattern matching code is at least one decade old and went through
many Solaris versions, so rewriting it from scratch was a wrong decision.
