[raster, smooth] Directly test outline size (#47500).

This improves stand-alone compilation.

* src/base/ftoutln.c (FT_Outline_Render): Move cbox size test to...

* src/raster/ftraster.c (ft_black_render), src/smooth/ftgrays.c
(gray_raster_render): ...these functions.

ChangeLog

@@ -1,3 +1,14 @@
+2016-03-23  Werner Lemberg  <wl@gnu.org>
+
+	[raster, smooth] Directly test outline size (#47500).
+
+	This improves stand-alone compilation.
+
+	* src/base/ftoutln.c (FT_Outline_Render): Move cbox size test to...
+
+	* src/raster/ftraster.c (ft_black_render), src/smooth/ftgrays.c
+	(gray_raster_render): ...these functions.
+
 2016-03-23  Werner Lemberg  <wl@gnu.org>
 
 	[raster, smooth] Fix some clang sanitizer runtime issues.

src/base/ftoutln.c

@@ -618,7 +618,6 @@
     FT_Error     error;
     FT_Renderer  renderer;
     FT_ListNode  node;
-    FT_BBox      cbox;
 
 
     if ( !library )
@@ -630,11 +629,6 @@
     if ( !params )
       return FT_THROW( Invalid_Argument );
 
-    FT_Outline_Get_CBox( outline, &cbox );
-    if ( cbox.xMin < -0x1000000L || cbox.yMin < -0x1000000L ||
-         cbox.xMax >  0x1000000L || cbox.yMax >  0x1000000L )
-      return FT_THROW( Invalid_Outline );
-
     renderer = library->cur_renderer;
     node     = library->renderers.head;
 

src/raster/ftraster.c

@@ -3175,6 +3175,20 @@
     if ( !target_map->buffer )
       return FT_THROW( Invalid );
 
+    /* reject too large outline coordinates */
+    {
+      FT_Vector*  vec   = outline->points;
+      FT_Vector*  limit = vec + outline->n_points;
+
+
+      for ( ; vec < limit; vec++ )
+      {
+        if ( vec->x < -0x1000000L || vec->x > 0x1000000L ||
+             vec->y < -0x1000000L || vec->y > 0x1000000L )
+         return FT_THROW( Invalid );
+      }
+    }
+
     ras.outline = *outline;
     ras.target  = *target_map;
 

src/smooth/ftgrays.c

@@ -2074,6 +2074,20 @@ typedef ptrdiff_t  FT_PtrDist;
     if ( !( params->flags & FT_RASTER_FLAG_AA ) )
       return FT_THROW( Invalid_Mode );
 
+    /* reject too large outline coordinates */
+    {
+      FT_Vector*  vec   = outline->points;
+      FT_Vector*  limit = vec + outline->n_points;
+
+
+      for ( ; vec < limit; vec++ )
+      {
+        if ( vec->x < -0x1000000L || vec->x > 0x1000000L ||
+             vec->y < -0x1000000L || vec->y > 0x1000000L )
+         return FT_THROW( Invalid_Outline );
+      }
+    }
+
     /* compute clipping box */
     if ( !( params->flags & FT_RASTER_FLAG_DIRECT ) )
     {