Imported Upstream version 2.13.2

[platform/upstream/freetype2.git] / src / base / ftgloadr.c

diff --git a/src/base/ftgloadr.c b/src/base/ftgloadr.c
index 05fc769..9823d09 100644 (file)
--- a/src/base/ftgloadr.c
+++ b/src/base/ftgloadr.c
@@ -4,7 +4,7 @@
  *
  *   The FreeType glyph loader (body).
  *
- * Copyright (C) 2002-2020 by
+ * Copyright (C) 2002-2023 by
  * David Turner, Robert Wilhelm, and Werner Lemberg
  *
  * This file is part of the FreeType project, and may only be used,
@@ -212,12 +212,12 @@
     FT_Outline*  current = &loader->current.outline;
     FT_Bool      adjust  = 0;
 
-    FT_UInt      new_max, old_max;
+    FT_UInt  new_max, old_max, min_new_max;
 
 
     error = FT_GlyphLoader_CreateExtra( loader );
     if ( error )
-      return error;
+      goto Exit;
 
     /* check points & tags */
     new_max = (FT_UInt)base->n_points + (FT_UInt)current->n_points +
@@ -226,10 +226,18 @@
 
     if ( new_max > old_max )
     {
-      new_max = FT_PAD_CEIL( new_max, 8 );
+      if ( new_max > FT_OUTLINE_POINTS_MAX )
+      {
+        error = FT_THROW( Array_Too_Large );
+        goto Exit;
+      }
 
+      min_new_max = old_max + ( old_max >> 1 );
+      if ( new_max < min_new_max )
+        new_max = min_new_max;
+      new_max = FT_PAD_CEIL( new_max, 8 );
       if ( new_max > FT_OUTLINE_POINTS_MAX )
-        return FT_THROW( Array_Too_Large );
+        new_max = FT_OUTLINE_POINTS_MAX;
 
       if ( FT_RENEW_ARRAY( base->points, old_max, new_max ) ||
            FT_RENEW_ARRAY( base->tags,   old_max, new_max ) )
@@ -254,7 +262,7 @@
 
     error = FT_GlyphLoader_CreateExtra( loader );
     if ( error )
-      return error;
+      goto Exit;
 
     /* check contours */
     old_max = loader->max_contours;
@@ -262,10 +270,18 @@
               n_contours;
     if ( new_max > old_max )
     {
-      new_max = FT_PAD_CEIL( new_max, 4 );
+      if ( new_max > FT_OUTLINE_CONTOURS_MAX )
+      {
+        error = FT_THROW( Array_Too_Large );
+        goto Exit;
+      }
 
+      min_new_max = old_max + ( old_max >> 1 );
+      if ( new_max < min_new_max )
+        new_max = min_new_max;
+      new_max = FT_PAD_CEIL( new_max, 4 );
       if ( new_max > FT_OUTLINE_CONTOURS_MAX )
-        return FT_THROW( Array_Too_Large );
+        new_max = FT_OUTLINE_CONTOURS_MAX;
 
       if ( FT_RENEW_ARRAY( base->contours, old_max, new_max ) )
         goto Exit;