Do not reset buffer flags in CCH_shutdown when it's called from ERR_bugcheck_msg because otherwise a precedence relationship can be ruined for other threads that may still be active

Author: ilya071294

src/jrd/cch.cpp

@@ -2094,7 +2094,7 @@ bool CCH_rollover_to_shadow(thread_db* tdbb, Database* dbb, jrd_file* file, cons
 }
 
 
-void CCH_shutdown(thread_db* tdbb)
+void CCH_shutdown(thread_db* tdbb, bool bugcheck)
 {
 /**************************************
  *
@@ -2144,7 +2144,7 @@ void CCH_shutdown(thread_db* tdbb)
 	bcb_repeat* tail = bcb->bcb_rpt;
 	const bcb_repeat* const end = tail + bcb->bcb_count;
 
-	if (tail && tail->bcb_bdb)
+	if (tail && tail->bcb_bdb && !bugcheck)
 	{
 		try
 		{

src/jrd/cch_proto.h

@@ -70,7 +70,7 @@ bool		CCH_prefetch_pages(Jrd::thread_db*);
 void		CCH_release(Jrd::thread_db*, Jrd::win*, const bool);
 void		CCH_release_exclusive(Jrd::thread_db*);
 bool		CCH_rollover_to_shadow(Jrd::thread_db* tdbb, Jrd::Database* dbb, Jrd::jrd_file*, const bool);
-void		CCH_shutdown(Jrd::thread_db*);
+void		CCH_shutdown(Jrd::thread_db*, bool bugcheck = false);
 void		CCH_unwind(Jrd::thread_db*, const bool);
 bool		CCH_validate(Jrd::win*);
 void		CCH_flush_ast(Jrd::thread_db*);

src/jrd/err.cpp

@@ -101,7 +101,7 @@ void ERR_bugcheck_msg(const TEXT* msg)
 	iscDbLogStatus(dbb->dbb_filename.nullStr(), &status);
 
 	dbb->dbb_flags |= DBB_bugcheck;
-	CCH_shutdown(tdbb);
+	CCH_shutdown(tdbb, true);
 
 	if (Config::getBugcheckAbort())
 		abort();