freebsd-nq/contrib/llvm-project/libunwind
Dimitry Andric 5866c369e4 Revert libunwind change to fix backtrace segfault on aarch64
Revert commit 22b615a96593 from llvm git (by Daniel Kiss):

  [libunwind] Support for leaf function unwinding.

  Unwinding leaf function is useful in cases when the backtrace finds a
  leaf function for example when it caused a signal.
  This patch also add the support for the DW_CFA_undefined because it marks
  the end of the frames.

  Ryan Prichard provided code for the tests.

  Reviewed By: #libunwind, mstorsjo

  Differential Revision: https://reviews.llvm.org/D83573

  Reland with limit the test to the x86_64-linux target.

Bisection has shown that this particular upstream commit causes programs
using backtrace(3) on aarch64 to segfault. This affects the lang/rust
port, for instance. Until we can upstream to fix this problem, revert
the commit for now.

Reported by:	mikael
PR:		256864
2021-07-03 00:35:49 +02:00
..
include Merge llvm-project main llvmorg-12-init-17869-g8e464dd76bef 2021-06-13 21:37:19 +02:00
src Revert libunwind change to fix backtrace segfault on aarch64 2021-07-03 00:35:49 +02:00
LICENSE.TXT