Added DBUG_ASSERT_AS_PRINTF compile flag

If compiling a non DBUG binary with
-DDBUG_ASSERT_AS_PRINTF asserts will be
changed to printf + stack trace (of stack
trace are enabled).

- Changed #ifndef DBUG_OFF to
  #ifdef DBUG_ASSERT_EXISTS
  for those DBUG_OFF that was just used to enable
  assert
- Assert checking that could greatly impact
  performance where changed to DBUG_ASSERT_SLOW which
  is not affected by DBUG_ASSERT_AS_PRINTF
- Added one extra option to my_print_stacktrace() to
  get more silent in case of stack trace printing as
  part of assert.

1 files changed, 3 insertions, 3 deletions

diff --git a/sql/sql_alter.cc b/sql/sql_alter.cc
index 867b5218fa3..f2f3f7f25d9 100644
--- a/sql/sql_alter.cc
+++ b/sql/sql_alter.cc
@@ -90,7 +90,7 @@ Alter_table_ctx::Alter_table_ctx()
     new_db(NULL), new_name(NULL), new_alias(NULL),
     fk_error_if_delete_row(false), fk_error_id(NULL),
     fk_error_table(NULL)
-#ifndef DBUG_OFF
+#ifdef DBUG_ASSERT_EXISTS
     , tmp_table(false)
 #endif
 {
@@ -110,7 +110,7 @@ Alter_table_ctx::Alter_table_ctx(THD *thd, TABLE_LIST *table_list,
     new_db(new_db_arg), new_name(new_name_arg),
     fk_error_if_delete_row(false), fk_error_id(NULL),
     fk_error_table(NULL)
-#ifndef DBUG_OFF
+#ifdef DBUG_ASSERT_EXISTS
     , tmp_table(false)
 #endif
 {
@@ -187,7 +187,7 @@ Alter_table_ctx::Alter_table_ctx(THD *thd, TABLE_LIST *table_list,
       this case. This fact is enforced with assert.
     */
     build_tmptable_filename(thd, tmp_path, sizeof(tmp_path));
-#ifndef DBUG_OFF
+#ifdef DBUG_ASSERT_EXISTS
     tmp_table= true;
 #endif
   }