Change update_auto_increment to return 1 if get_auto_increment() returned ~(ulonglong)

This makes it easier to give an error in the handler if there was a problem generating an auto-increment value

mysys/thr_alarm.c

@@ -85,7 +85,7 @@ void init_thr_alarm(uint max_alarms)
 #else
   {
     struct sigaction sact;
-    sact.sa_flags = 0;
+    bzero((char*) &sact, sizeof(sact));
     sact.sa_handler = thread_alarm;
     sigaction(THR_CLIENT_ALARM, &sact, (struct sigaction*) 0);
   }

sql/handler.cc

@@ -1376,7 +1376,19 @@ next_insert_id(ulonglong nr,struct system_variables *variables)
 
 
 /*
-  Updates columns with type NEXT_NUMBER if:
+  Update the auto_increment field if necessary
+
+  SYNOPSIS
+     update_auto_increment()
+
+  RETURN
+    0	ok
+    1 	get_auto_increment() was called and returned ~(ulonglong) 0
+    
+
+  IMPLEMENTATION
+
+    Updates columns with type NEXT_NUMBER if:
 
   - If column value is set to NULL (in which case
     auto_increment_field_not_null is 0)
@@ -1415,12 +1427,13 @@ next_insert_id(ulonglong nr,struct system_variables *variables)
     thd->next_insert_id is cleared after it's been used for a statement.
 */
 
-void handler::update_auto_increment()
+bool handler::update_auto_increment()
 {
   ulonglong nr;
   THD *thd= table->in_use;
   struct system_variables *variables= &thd->variables;
   bool auto_increment_field_not_null;
+  bool result= 0;
   DBUG_ENTER("handler::update_auto_increment");
 
   /*
@@ -1449,11 +1462,13 @@ void handler::update_auto_increment()
       thd->next_insert_id= nr;
       DBUG_PRINT("info",("next_insert_id: %lu", (ulong) nr));
     }
-    DBUG_VOID_RETURN;
+    DBUG_RETURN(0);
   }
   if (!(nr= thd->next_insert_id))
   {
-    nr= get_auto_increment();
+    if ((nr= get_auto_increment()) == ~(ulonglong) 0)
+      result= 1;                                // Mark failure
+
     if (variables->auto_increment_increment != 1)
       nr= next_insert_id(nr-1, variables);
     /*
@@ -1493,7 +1508,7 @@ void handler::update_auto_increment()
 
   /* Mark that we generated a new value */
   auto_increment_column_changed=1;
-  DBUG_VOID_RETURN;
+  DBUG_RETURN(result);
 }
 
 /*

sql/handler.h

@@ -497,7 +497,7 @@ public:
     {}
   virtual ~handler(void) { /* TODO: DBUG_ASSERT(inited == NONE); */ }
   int ha_open(const char *name, int mode, int test_if_locked);
-  void update_auto_increment();
+  bool update_auto_increment();
   virtual void print_error(int error, myf errflag);
   virtual bool get_error_message(int error, String *buf);
   uint get_dup_key(int error);

sql/item_strfunc.cc

@@ -2906,9 +2906,9 @@ String *Item_func_uuid::val_str(String *str)
   ulonglong tv=my_getsystime() + UUID_TIME_OFFSET + nanoseq;
   if (unlikely(tv < uuid_time))
     set_clock_seq_str();
-  else
-  if (unlikely(tv == uuid_time))
-  { /* special protection from low-res system clocks */
+  else if (unlikely(tv == uuid_time))
+  {
+    /* special protection from low-res system clocks */
     nanoseq++;
     tv++;
   }

tests/mysql_client_test.c

@@ -787,6 +787,7 @@ static void verify_field_count(MYSQL_RES *result, uint exp_count)
 
 /* Utility function to execute a query using prepare-execute */
 
+#ifndef EMBEDDED_LIBRARY
 static void execute_prepare_query(const char *query, ulonglong exp_count)
 {
   MYSQL_STMT *stmt;
@@ -807,7 +808,7 @@ static void execute_prepare_query(const char *query, ulonglong exp_count)
   DIE_UNLESS(affected_rows == exp_count);
   mysql_stmt_close(stmt);
 }
-
+#endif
 
 /* Store result processing */