[pango] [HB] Correctly sanitize LigatureAttach

[Behdad Esfahbod <behdad src gnome org>]

commit 165203e4f57c39d292f4a010561948b58c6196ab
Author: Behdad Esfahbod <behdad behdad org>
Date:   Fri Aug 14 18:32:56 2009 -0400

    [HB] Correctly sanitize LigatureAttach

 pango/opentype/hb-open-type-private.hh        |   14 ++++++++++----
 pango/opentype/hb-ot-layout-common-private.hh |    4 ++++
 pango/opentype/hb-ot-layout-gdef-private.hh   |    4 ++--
 pango/opentype/hb-ot-layout-gpos-private.hh   |    6 +++---
 4 files changed, 19 insertions(+), 9 deletions(-)
---
diff --git a/pango/opentype/hb-open-type-private.hh b/pango/opentype/hb-open-type-private.hh
index b5118fc..caf6857 100644
--- a/pango/opentype/hb-open-type-private.hh
+++ b/pango/opentype/hb-open-type-private.hh
@@ -515,12 +515,15 @@ struct GenericArrayOf
   inline bool sanitize (SANITIZE_ARG_DEF) {
     SANITIZE_DEBUG ();
     if (!SANITIZE_GET_SIZE()) return false;
-    /* Note; for non-recursive types, this is not much needed
+    /* Note:
+     * for non-recursive types, this is not much needed.
+     * But we keep the code to make sure the objects pointed to
+     * do have a simple sanitize(). */
+    return true;
     unsigned int count = len;
     for (unsigned int i = 0; i < count; i++)
       if (!SANITIZE (array[i]))
         return false;
-    */
     return true;
   }
   inline bool sanitize (SANITIZE_ARG_DEF, const void *base) {
@@ -591,12 +594,15 @@ struct HeadlessArrayOf
   inline bool sanitize (SANITIZE_ARG_DEF) {
     SANITIZE_DEBUG ();
     if (!SANITIZE_GET_SIZE()) return false;
-    /* Note; for non-recursive types, this is not much needed
+    /* Note:
+     * for non-recursive types, this is not much needed.
+     * But we keep the code to make sure the objects pointed to
+     * do have a simple sanitize(). */
+    return true;
     unsigned int count = len ? len - 1 : 0;
     for (unsigned int i = 0; i < count; i++)
       if (!SANITIZE (array[i]))
         return false;
-    */
     return true;
   }
 
diff --git a/pango/opentype/hb-ot-layout-common-private.hh b/pango/opentype/hb-ot-layout-common-private.hh
index e2618ee..764f14e 100644
--- a/pango/opentype/hb-ot-layout-common-private.hh
+++ b/pango/opentype/hb-ot-layout-common-private.hh
@@ -309,6 +309,10 @@ struct OffsetListOf : OffsetArrayOf<Type>
     SANITIZE_DEBUG ();
     return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this));
   }
+  inline bool sanitize (SANITIZE_ARG_DEF, unsigned int user_data) {
+    SANITIZE_DEBUG ();
+    return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this), user_data);
+  }
 };
 
 typedef OffsetListOf<Lookup> LookupList;
diff --git a/pango/opentype/hb-ot-layout-gdef-private.hh b/pango/opentype/hb-ot-layout-gdef-private.hh
index 1dce3c0..8b6019a 100644
--- a/pango/opentype/hb-ot-layout-gdef-private.hh
+++ b/pango/opentype/hb-ot-layout-gdef-private.hh
@@ -201,12 +201,12 @@ struct LigGlyph
 
   inline bool sanitize (SANITIZE_ARG_DEF) {
     SANITIZE_DEBUG ();
-    return SANITIZE (carets);
+    return SANITIZE_THIS (carets);
   }
 
   private:
   OffsetArrayOf<CaretValue>
-		carets;			/* Offset rrray of CaretValue tables
+		carets;			/* Offset array of CaretValue tables
 					 * --from beginning of LigGlyph table
 					 * --in increasing coordinate order */
 };
diff --git a/pango/opentype/hb-ot-layout-gpos-private.hh b/pango/opentype/hb-ot-layout-gpos-private.hh
index bb4aa11..bbe8a6f 100644
--- a/pango/opentype/hb-ot-layout-gpos-private.hh
+++ b/pango/opentype/hb-ot-layout-gpos-private.hh
@@ -1024,7 +1024,7 @@ typedef AnchorMatrix LigatureAttach;	/* component-major--
 					 * ordered by class--zero-based. */
 ASSERT_SIZE (LigatureAttach, 2);
 
-typedef OffsetArrayOf<LigatureAttach> LigatureArray;
+typedef OffsetListOf<LigatureAttach> LigatureArray;
 					/* Array of LigatureAttach
 					 * tables ordered by
 					 * LigatureCoverage Index */
@@ -1063,7 +1063,7 @@ struct MarkLigPosFormat1
 
     const MarkArray& mark_array = this+markArray;
     const LigatureArray& lig_array = this+ligatureArray;
-    const LigatureAttach& lig_attach = &lig_array+lig_array[lig_index];
+    const LigatureAttach& lig_attach = lig_array[lig_index];
 
     /* Find component to attach to */
     count = lig_attach.rows;
@@ -1108,7 +1108,7 @@ struct MarkLigPosFormat1
     SANITIZE_DEBUG ();
     return SANITIZE_SELF () &&
 	   SANITIZE_THIS2 (markCoverage, ligatureCoverage) &&
-	   SANITIZE_THIS2 (markArray, ligatureArray);
+	   SANITIZE_THIS (markArray) && ligatureArray.sanitize (SANITIZE_ARG, CONST_CHARP(this), classCount);
   }
 
   private: