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[Bug debug/37022] internal compiler error: in compute_barrier_args_size
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jan 2010 08:22:34 -0000
- Subject: [Bug debug/37022] internal compiler error: in compute_barrier_args_size
- References: <bug-37022-5406@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from jakub at gcc dot gnu dot org 2010-01-25 08:22 -------
It is no longer marged regression, so no longer release critical.
Anyway, the goal should be to reenable the asserts in dwarf2out.c and fix the
issues, because they really result in wrong unwind info. Only the unwinder
uses it though (DW_CFA_GNU_args_size), so the question is if we can come up
with a testcase that actually misbehaves of it.
There are two known cases which triggered the assertions - one is alloca with
an argument that ends up to be constant in the end, and the other is
crossjumping of noreturn sequences with different stack push depth.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|blocker |major
Priority|P1 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37022