Better fix for count(distinct) bug

include/my_sys.h:
  Remove compiler warning
mysql-test/mysql-test-run.sh:
  Don't examine log files when you run with --extern

include/my_sys.h

@@ -143,7 +143,7 @@ extern ulonglong safemalloc_mem_limit;
 #define CALLER_INFO         , __FILE__, __LINE__
 #define ORIG_CALLER_INFO    , sFile, uLine
 #else
-#define my_checkmalloc() (0)
+#define my_checkmalloc()
 #undef TERMINATE
 #define TERMINATE(A) {}
 #define QUICK_SAFEMALLOC

mysql-test/mysql-test-run.sh

@@ -607,7 +607,9 @@ report_stats () {
         $ECHO "http://www.mysql.com/doc/M/y/MySQL_test_suite.html"
     fi
 
-    #
+    if test -z "$USE_RUNNING_SERVER"
+    then
+
     # Report if there was any fatal warnings/errors in the log files
     #
     $RM -f $MY_LOG_DIR/warnings $MY_LOG_DIR/warnings.tmp
@@ -630,6 +632,7 @@ report_stats () {
       echo "WARNING: Got errors/warnings while running tests. Please examine"
       echo "$MY_LOG_DIR/warnings for details."
     fi
+    fi
 }
 
 mysql_install_db () {

sql/item_sum.cc

-/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+/* Copyright (C) 2000-2003 MySQL AB
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -918,7 +918,7 @@ int dump_leaf(byte* key, uint32 count __attribute__((unused)),
 }
 
 
-void Item_sum_count_distinct::no_rows_in_result()
+Item_sum_count_distinct::~Item_sum_count_distinct()
 {
   if (table)
     free_tmp_table(current_thd, table);

sql/item_sum.h

@@ -185,7 +185,7 @@ class Item_sum_count_distinct :public Item_sum_int
     :Item_sum_int(list),table(0),used_table_cache(~(table_map) 0),
      tmp_table_param(0),use_tree(0),always_null(0)
   { quick_group=0; }
-  ~Item_sum_count_distinct() { no_rows_in_result(); }
+  ~Item_sum_count_distinct();
 
   table_map used_tables() const { return used_table_cache; }
   enum Sumfunctype sum_func () const { return COUNT_DISTINCT_FUNC; }
@@ -196,7 +196,7 @@ class Item_sum_count_distinct :public Item_sum_int
   void update_field(int offset) { return ; }	// Never called
   const char *func_name() const { return "count_distinct"; }
   bool setup(THD *thd);
-  void no_rows_in_result();
+  void no_rows_in_result() {}
   unsigned int size_of() { return sizeof(*this);}
 };