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/storage/maria/ma_page.c b/storage/maria/ma_page.c
index 4021fb8e161..d6acc0520c1 100644
--- a/storage/maria/ma_page.c
+++ b/storage/maria/ma_page.c
@@ -420,11 +420,11 @@ my_off_t _ma_new(register MARIA_HA *info, int level,
         Next deleted page's number is in the header of the present page
         (single linked list):
       */
-#ifndef DBUG_OFF
+#ifdef DBUG_ASSERT_EXISTS
       my_off_t key_del_current;
 #endif
       share->key_del_current= mi_sizekorr(buff+share->keypage_header);
-#ifndef DBUG_OFF
+#ifdef DBUG_ASSERT_EXISTS
       key_del_current= share->key_del_current;
       DBUG_ASSERT((key_del_current != 0) &&
                   ((key_del_current == HA_OFFSET_ERROR) ||
@@ -512,7 +512,7 @@ static my_bool _ma_log_compact_keypage(MARIA_PAGE *ma_page,
    @param min_read_from  Remove all trids from page less than this
 
    @retval 0             Ok
-   ®retval 1             Error;  my_errno contains the error
+   ®retval 1             Error;  my_errno contains the error
 */
 
 my_bool _ma_compact_keypage(MARIA_PAGE *ma_page, TrID min_read_from)