The totally dumb reference checker

[vlc] / src / misc / variables.c

diff --git a/src/misc/variables.c b/src/misc/variables.c
index 052d9039e86d9b2c5e6fc3bf499b045d0ef835af..6d5923a2f78e2b7eeea40f4a6e218bd6dfa47bd6 100644 (file)
--- a/src/misc/variables.c
+++ b/src/misc/variables.c
@@ -53,7 +53,13 @@ static int CmpTime( vlc_value_t v, vlc_value_t w )
 {
     return v.i_time == w.i_time ? 0 : v.i_time > w.i_time ? 1 : -1;
 }
-static int CmpString( vlc_value_t v, vlc_value_t w ) { return strcmp( v.psz_string, w.psz_string ); }
+static int CmpString( vlc_value_t v, vlc_value_t w )
+{
+    if( !v.psz_string )
+        return !w.psz_string ? 0 : -1;
+    else
+        return !w.psz_string ? 1 : strcmp( v.psz_string, w.psz_string );
+}
 static int CmpFloat( vlc_value_t v, vlc_value_t w ) { return v.f_float == w.f_float ? 0 : v.f_float > w.f_float ? 1 : -1; }
 static int CmpAddress( vlc_value_t v, vlc_value_t w ) { return v.p_address == w.p_address ? 0 : v.p_address > w.p_address ? 1 : -1; }
 
@@ -61,7 +67,7 @@ static int CmpAddress( vlc_value_t v, vlc_value_t w ) { return v.p_address == w.
  * Local duplication functions, and local deallocation functions
  *****************************************************************************/
 static void DupDummy( vlc_value_t *p_val ) { (void)p_val; /* unused */ }
-static void DupString( vlc_value_t *p_val ) { p_val->psz_string = strdup( p_val->psz_string ); }
+static void DupString( vlc_value_t *p_val ) { if( p_val->psz_string ) p_val->psz_string = strdup( p_val->psz_string ); }
 
 static void DupList( vlc_value_t *p_val )
 {
@@ -162,6 +168,7 @@ int __var_Create( vlc_object_t *p_this, const char *psz_name, int i_type )
     static vlc_list_t dummy_null_list = {0, NULL, NULL};
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     /* FIXME: if the variable already exists, we don't duplicate it. But we
@@ -247,7 +254,7 @@ int __var_Create( vlc_object_t *p_this, const char *psz_name, int i_type )
             p_var->pf_cmp = CmpString;
             p_var->pf_dup = DupString;
             p_var->pf_free = FreeString;
-            p_var->val.psz_string = strdup( "" );
+            p_var->val.psz_string = NULL;
             break;
         case VLC_VAR_FLOAT:
             p_var->pf_cmp = CmpFloat;
@@ -265,7 +272,7 @@ int __var_Create( vlc_object_t *p_this, const char *psz_name, int i_type )
             p_var->pf_cmp = CmpAddress;
             p_var->pf_free = FreeMutex;
             p_var->val.p_address = malloc( sizeof(vlc_mutex_t) );
-            vlc_mutex_init( p_this, (vlc_mutex_t*)p_var->val.p_address );
+            vlc_mutex_init( (vlc_mutex_t*)p_var->val.p_address );
             break;
         case VLC_VAR_LIST:
             p_var->pf_cmp = CmpAddress;
@@ -325,6 +332,7 @@ int __var_Destroy( vlc_object_t *p_this, const char *psz_name )
     variable_t *p_var;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     i_var = GetUnused( p_this, psz_name );
@@ -401,6 +409,7 @@ int __var_Change( vlc_object_t *p_this, const char *psz_name,
     vlc_value_t oldval;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     i_var = Lookup( p_priv->p_vars, p_priv->i_vars, psz_name );
@@ -753,6 +762,7 @@ int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
     vlc_value_t oldval;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     i_var = GetUnused( p_this, psz_name );
@@ -830,6 +840,7 @@ int __var_Get( vlc_object_t *p_this, const char *psz_name, vlc_value_t *p_val )
     variable_t *p_var;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     i_var = Lookup( p_priv->p_vars, p_priv->i_vars, psz_name );
@@ -896,6 +907,7 @@ int __var_AddCallback( vlc_object_t *p_this, const char *psz_name,
     callback_entry_t entry;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     entry.pf_callback = pf_callback;
     entry.p_data = p_data;
 
@@ -933,6 +945,7 @@ int __var_DelCallback( vlc_object_t *p_this, const char *psz_name,
     variable_t *p_var;
     vlc_object_internals_t *p_priv = vlc_internals( p_this );
 
+    vlc_refcheck( p_this );
     vlc_mutex_lock( &p_priv->var_lock );
 
     i_var = GetUnused( p_this, psz_name );
@@ -1569,6 +1582,7 @@ int __var_Command( vlc_object_t *p_this, const char *psz_name,
         return VLC_ENOOBJ;
     }
 
+    vlc_refcheck( p_this );
     i_type = var_Type( p_obj, psz_cmd );
     if( !( i_type&VLC_VAR_ISCOMMAND ) )
     {