- Fix MDEV-5393 and MDEV-5434. It is a major update of ODBC catalog tables

  processing that takes care of:
  - Drastically reduce the amount of storge needed to process them.
  - Handle longjmp's.
  - Makes the line limit an opion (MAXRES)
  - Schema can also be specified with the DBNAME option.
  - Issue warnings on fetch errors or when result lines have been limited.
  - Change some column names to reflect ODBC version 3 standard.
  The documentation have been updated accordingly

modified:
  storage/connect/filamdbf.cpp
  storage/connect/ha_connect.cc
  storage/connect/myconn.cpp
  storage/connect/mysql-test/connect/r/odbc.result
  storage/connect/mysql-test/connect/r/odbc_postgresql.result
  storage/connect/mysql-test/connect/r/odbc_sqlite3.result
  storage/connect/mysql-test/connect/r/odbc_xls.result
  storage/connect/mysql-test/connect/r/xml.result
  storage/connect/mysql-test/connect/t/odbc_postgresql.test
  storage/connect/odbccat.h
  storage/connect/odbconn.cpp
  storage/connect/odbconn.h
  storage/connect/plgdbsem.h
  storage/connect/plgdbutl.cpp
  storage/connect/rcmsg.c
  storage/connect/tabfmt.cpp
  storage/connect/table.cpp
  storage/connect/tabodbc.cpp
  storage/connect/tabodbc.h
  storage/connect/tabutil.cpp
  storage/connect/tabwmi.cpp
  storage/connect/user_connect.cc
  storage/connect/valblk.cpp
  storage/connect/valblk.h
  storage/connect/value.cpp

1 files changed, 2 insertions, 1 deletions

diff --git a/storage/connect/value.cpp b/storage/connect/value.cpp
index 2522fa178cd..8857608015e 100644
--- a/storage/connect/value.cpp
+++ b/storage/connect/value.cpp
@@ -1129,7 +1129,8 @@ void TYPVAL<PSZ>::SetValue_psz(PSZ s)
 /***********************************************************************/
 void TYPVAL<PSZ>::SetValue_pvblk(PVBLK blk, int n)
   {
-  strncpy(Strp, blk->GetCharValue(n), Len);
+  // STRBLK's can return a NULL pointer
+  SetValue_psz(blk->GetCharValue(n));
   } // end of SetValue_pvblk
 
 /***********************************************************************/