K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2021-12-25T12:02:51.964473Z
K 7
svn:log
V 1197
Apply upstream lldb fix for unhandled Error causing abort

Merge commit 5033f0793fe6 from llvm git (by Dimitry Andric):

  [lldb] Avoid unhandled Error in TypeSystemMap::GetTypeSystemForLanguage

  When assertions are turned off, the `llvm::Error` value created at the
  start of this function is overwritten using the move-assignment
  operator, but the success value is never checked. Whenever a TypeSystem
  cannot be found or created, this can lead to lldb core dumping with:

      Program aborted due to an unhandled Error:
      Error value was Success. (Note: Success values must still be checked prior to being destroyed).

  Fix this by not creating a `llvm::Error` value in advance, and directly
  returning the result of `llvm::make_error` instead, whenever an error is
  encountered.

  See also: <https://bugs.freebsd.org/253881> and
  <https://bugs.freebsd.org/257829>.

  Reviewed By: teemperor

  Differential Revision: https://reviews.llvm.org/D108088

Reported by:	dmgk, ota@j.email.ne.jp
PR:		253881, 257829
MFC after:	3 days

(cherry picked from commit c1a540709a83f810aa47380b946552ab20020374)

Git Hash:   456e2b149ecb1ea5f9e81b9b0733c7ec9526b8c2
Git Author: dim@FreeBSD.org
END