Remove dumping of some not needed core's when running test suite

Before this patch running full mtr generated some 70 cores (at least
on systemd). Now no cores should be generated.

- Changed DBUG_ABORT()'s used by mysql-test-run to DBUG_SUICIDE()
- Changed DBUG_ABORT() used to crash server with core to DBUG_ASSERT(0)
- DBUG_ASSERT now flushes DBUG files

include/my_dbug.h

@@ -102,8 +102,8 @@ extern  const char* _db_get_func_(void);
 #define DBUG_END()  _db_end_ ()
 #define DBUG_LOCK_FILE _db_lock_file_()
 #define DBUG_UNLOCK_FILE _db_unlock_file_()
-#define DBUG_ASSERT(A) assert(A)
-#define DBUG_SLOW_ASSERT(A) assert(A)
+#define DBUG_ASSERT(A) ( _db_flush_(), assert(A) )
+#define DBUG_SLOW_ASSERT(A) ( _db_flush_(), assert(A) )
 #define DBUG_ASSERT_EXISTS
 #define DBUG_EXPLAIN(buf,len) _db_explain_(0, (buf),(len))
 #define DBUG_EXPLAIN_INITIAL(buf,len) _db_explain_init_((buf),(len))

sql/debug_sync.cc

@@ -1457,7 +1457,7 @@ static void debug_sync_execute(THD *thd, st_debug_sync_action *action)
                        ER_DEBUG_SYNC_TIMEOUT,
                        ER_THD(thd, ER_DEBUG_SYNC_TIMEOUT));
           thd->abort_on_warning= save_abort_on_warning;
-          DBUG_EXECUTE_IF("debug_sync_abort_on_timeout", DBUG_ABORT(););
+          DBUG_EXECUTE_IF("debug_sync_abort_on_timeout", DBUG_ASSERT(0););
           break;
         }
         error= 0;

sql/opt_range.cc

@@ -10928,7 +10928,7 @@ int read_keys_and_merge_scans(THD *thd,
 
   if (unique == NULL)
   {
-    DBUG_EXECUTE_IF("index_merge_may_not_create_a_Unique", DBUG_ABORT(); );
+    DBUG_EXECUTE_IF("index_merge_may_not_create_a_Unique", DBUG_SUICIDE(); );
     DBUG_EXECUTE_IF("only_one_Unique_may_be_created", 
                     DBUG_SET("+d,index_merge_may_not_create_a_Unique"); );
 

sql/sql_parse.cc

@@ -1592,7 +1592,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   
   DBUG_EXECUTE_IF("crash_dispatch_command_before",
                   { DBUG_PRINT("crash_dispatch_command_before", ("now"));
-                    DBUG_ABORT(); });
+                    DBUG_SUICIDE(); });
 
   /* Performance Schema Interface instrumentation, begin */
   thd->m_statement_psi= MYSQL_REFINE_STATEMENT(thd->m_statement_psi,

sql/sys_vars.ic

@@ -88,7 +88,7 @@
     while(!(X))                                                         \
     {                                                                   \
       fprintf(stderr, "Sysvar '%s' failed '%s'\n", name_arg, #X);       \
-      DBUG_ABORT();                                                     \
+      DBUG_ASSERT(0);                                                   \
       exit(255);                                                        \
     }
 

storage/maria/ha_maria.cc

@@ -2058,7 +2058,7 @@ int ha_maria::enable_indexes(uint mode)
   DBUG_EXECUTE_IF("maria_crash_enable_index",
                   {
                     DBUG_PRINT("maria_crash_enable_index", ("now"));
-                    DBUG_ABORT();
+                    DBUG_SUICIDE();
                   });
   return error;
 }

storage/maria/ma_blockrec.c

@@ -3165,7 +3165,7 @@ static my_bool write_block_record(MARIA_HA *info,
                       translog_flush(translog_get_horizon());
                     });
     DBUG_EXECUTE_IF("maria_crash",
-                    { DBUG_PRINT("maria_crash", ("now")); DBUG_ABORT(); });
+                    { DBUG_PRINT("maria_crash", ("now")); DBUG_SUICIDE(); });
   }
 #endif
 

storage/maria/ma_check.c

@@ -3175,7 +3175,7 @@ int maria_sort_index(HA_CHECK *param, register MARIA_HA *info, char *name)
   DBUG_EXECUTE_IF("maria_crash_sort_index",
                   {
                     DBUG_PRINT("maria_crash_sort_index", ("now"));
-                    DBUG_ABORT();
+                    DBUG_SUICIDE();
                   });
   DBUG_RETURN(0);
 
@@ -3913,7 +3913,7 @@ int maria_repair_by_sort(HA_CHECK *param, register MARIA_HA *info,
     DBUG_EXECUTE_IF("maria_crash_create_index_by_sort",
                     {
                       DBUG_PRINT("maria_crash_create_index_by_sort", ("now"));
-                      DBUG_ABORT();
+                      DBUG_SUICIDE();
                     });
     if (scan_inited)
     {
@@ -4124,7 +4124,7 @@ int maria_repair_by_sort(HA_CHECK *param, register MARIA_HA *info,
     DBUG_EXECUTE_IF("maria_crash_repair",
                     {
                       DBUG_PRINT("maria_crash_repair", ("now"));
-                      DBUG_ABORT();
+                      DBUG_SUICIDE();
                     });
   }
   share->state.changed|= STATE_NOT_SORTED_PAGES;

storage/maria/ma_checkpoint.c

@@ -131,7 +131,7 @@ int ma_checkpoint_execute(CHECKPOINT_LEVEL level, my_bool no_wait)
 
   result= really_execute_checkpoint();
   DBUG_EXECUTE_IF("maria_crash_after_checkpoint",
-                  { DBUG_PRINT("maria_crash", ("now")); DBUG_ABORT(); });
+                  { DBUG_PRINT("maria_crash", ("now")); DBUG_SUICIDE(); });
 
   mysql_cond_broadcast(&COND_checkpoint);
 end:
@@ -426,7 +426,7 @@ void ma_checkpoint_end(void)
                     flush_all_tables(1);
                   });
   DBUG_EXECUTE_IF("maria_crash",
-                  { DBUG_PRINT("maria_crash", ("now")); DBUG_ABORT(); });
+                  { DBUG_PRINT("maria_crash", ("now")); DBUG_SUICIDE(); });
 
   if (checkpoint_control.inited)
   {

storage/maria/ma_create.c

@@ -1141,7 +1141,7 @@ int maria_create(const char *name, enum data_file_type datafile_type,
     DBUG_EXECUTE_IF("maria_crash_create_table",
                     {
                       DBUG_PRINT("maria_crash_create_table", ("now"));
-                      DBUG_ABORT();
+                      DBUG_SUICIDE();
                     });
     /*
       store LSN into file, needed for Recovery to not be confused if a

storage/myisam/mi_close.c

@@ -63,7 +63,7 @@ int mi_close(register MI_INFO *info)
   if (flag)
   {
     DBUG_EXECUTE_IF("crash_before_flush_keys",
-                    if (share->kfile >= 0) DBUG_ABORT(););
+                    if (share->kfile >= 0) DBUG_SUICIDE(););
     if (share->kfile >= 0 &&
 	flush_key_blocks(share->key_cache, share->kfile,
                          &share->dirty_part_map,