* read.c [HANDLE_BUNDLE] (bundle_lock_depth): New variable. (read_a_source_file) [HANDLE_BUNDLE]: Reset it. [HANDLE_BUNDLE] (s_bundle_lock, s_bundle_unlock): Allow nested pairs. gas/testsuite/ * gas/i386/bundle-bad.s: Remove nested .bundle_lock case. * gas/i386/bundle-bad.l: Remove expected error line. * gas/i386/bundle-lock.s: Add nested .bundle_lock case. * gas/i386/bundle-lock.d: Update expectations.