Fix MDEV-12142 crash when creating CSV table

Was an unprepared longjmp (now throw)
Also fix a wrong calculation of To_Line sometimes causing a crash
because of buffer overflow.
  modified:   storage/connect/tabdos.cpp

Fix a wrong setting of USER for JDBC tables in connect_assisted_discovery.
Update jdbc_new.test after that fix, which changed errors.
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/mysql-test/connect/r/jdbc_new.result
  modified:   storage/connect/mysql-test/connect/t/jdbc_new.test

Make using try/catch/throw the default option
  modified:   storage/connect/CMakeLists.txt

Typo
  modified:   storage/connect/xindex.cpp

Replace setjmp-longjmp's by try_catch-throw
  modified:   storage/connect/CMakeLists.txt
  modified:   storage/connect/array.cpp
  modified:   storage/connect/blkfil.cpp
  modified:   storage/connect/colblk.cpp
  modified:   storage/connect/connect.cc
  modified:   storage/connect/filamtxt.cpp
  modified:   storage/connect/filamvct.cpp
  modified:   storage/connect/filter.cpp
  modified:   storage/connect/global.h
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/jdbconn.cpp
  modified:   storage/connect/json.cpp
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/odbconn.cpp
  modified:   storage/connect/osutil.c
  modified:   storage/connect/plgdbutl.cpp
  deleted:    storage/connect/plugutil.c
  added:      storage/connect/plugutil.cpp
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabfix.cpp
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabjdbc.cpp
  modified:   storage/connect/tabjdbc.h
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabmul.cpp
  modified:   storage/connect/tabmul.h
  modified:   storage/connect/tabmysql.cpp
  modified:   storage/connect/tabodbc.cpp
  modified:   storage/connect/tabodbc.h
  modified:   storage/connect/tabpivot.cpp
  modified:   storage/connect/tabsys.cpp
  modified:   storage/connect/tabvct.cpp
  modified:   storage/connect/tabvir.cpp
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/valblk.cpp
  modified:   storage/connect/value.cpp
  modified:   storage/connect/xindex.cpp
  modified:   storage/connect/xobject.cpp

1 files changed, 12 insertions, 4 deletions

diff --git a/storage/connect/tabmul.cpp b/storage/connect/tabmul.cpp
index 78adde81d12..8f1e6f3819d 100644
--- a/storage/connect/tabmul.cpp
+++ b/storage/connect/tabmul.cpp
@@ -958,8 +958,12 @@ void DIRCOL::ReadColumn(PGLOBAL g)
 #endif  // !__WIN__
     default:
       sprintf(g->Message, MSG(INV_DIRCOL_OFST), N);
-      longjmp(g->jumper[g->jump_level], GetAmType());
-    } // endswitch N
+#if defined(USE_TRY)
+			throw GetAmType();
+#else   // !USE_TRY
+			longjmp(g->jumper[g->jump_level], GetAmType());
+#endif  // !USE_TRY
+	} // endswitch N
 
   } // end of ReadColumn
 
@@ -1423,8 +1427,12 @@ void TDBDHR::CloseDB(PGLOBAL g)
   // Close the search handle.
   if (!FindClose(Hsearch)) {
     strcpy(g->Message, MSG(SRCH_CLOSE_ERR));
-    longjmp(g->jumper[g->jump_level], GetAmType());
-    } // endif FindClose
+#if defined(USE_TRY)
+		throw GetAmType();
+#else   // !USE_TRY
+		longjmp(g->jumper[g->jump_level], GetAmType());
+#endif  // !USE_TRY
+	} // endif FindClose
 
   iFile = 0;
   Hsearch = INVALID_HANDLE_VALUE;