[Bug default/29693] clang-libs from f37 fails self test with 2.1

["woodard at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29693

--- Comment #4 from Ben Woodard <woodard at redhat dot com> ---
The fedabipkgdiff on clang-libs ran all night without making any apparent
forward progress. So it appears like we have two bugs here.

1) what is causing fedabipkgdiff to spin in what appears to be an infinite loop
after doing  at least some of the abipkgdiff comparisons.

2) clang-libs is failing selfcheck when run at a basic abipkgdiff level.


$ abipkgdiff --self-check  --d1
/home/ben/.cache/fedabipkgdiff/downloads/clang-devel-debuginfo-15.0.7-2.fc37.aarch64.rpm
 --d1
/home/ben/.cache/fedabipkgdiff/downloads/clang-libs-debuginfo-15.0.7-2.fc37.aarch64.rpm
 --d1
/home/ben/.cache/fedabipkgdiff/downloads/clang-tools-extra-debuginfo-15.0.7-2.fc37.aarch64.rpm
 --d1
/home/ben/.cache/fedabipkgdiff/downloads/clang-debuginfo-15.0.7-2.fc37.aarch64.rpm
/home/ben/.cache/fedabipkgdiff/downloads/clang-libs-15.0.7-2.fc37.aarch64.rpm
======== comparing'libclang-cpp.so.15' to itself wrongly yielded result:
===========
  Functions changes summary: 0 Removed, 1 Changed (1 filtered out), 0 Added
functions
  Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

  1 function with some indirect sub-type change:

    [C] 'method virtual clang::dataflow::Solver::Result
clang::dataflow::WatchedLiteralsSolver::solve(llvm::DenseSet<clang::dataflow::BoolValue
*, llvm::DenseMapInfo<clang::dataflow::BoolValue *, void> >)' at
WatchedLiteralsSolver.h:31:1 has some indirect sub-type changes:
      return type changed:
        type size hasn't changed
        2 data member deletions:
          'clang::dataflow::Solver::Result::Status SATCheckStatus', at offset 0
(in bits) at Solver.h:78:1
          'llvm::Optional<llvm::DenseMap<clang::dataflow::AtomicBoolValue *,
clang::dataflow::Solver::Result::Assignment,
llvm::DenseMapInfo<clang::dataflow::AtomicBoolValue *, void>,
llvm::detail::DenseMapPair<clang::dataflow::AtomicBoolValue *,
clang::dataflow::Solver::Result::Assignment> > > Solution', at offset 64 (in
bits) at Solver.h:79:1

===SELF CHECK FAILED for 'libclang-cpp.so.15'
==== SELF CHECK SUCCEEDED for 'libclang.so.15.0.7' ====

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