(mark_char_table): New function.

(mark_object): Use mark_char_table for a char-table.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 157d768d69d..d11eff3d387 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -5371,6 +5371,34 @@ mark_vectorlike (ptr)
   return 1;
 }
 
+/* Like mark_vectorlike but optimized for char-tables (and
+   sub-char-tables) assuming that the contents are mostly integers or
+   symbols.  */
+
+static void
+mark_char_table (ptr)
+     struct Lisp_Vector *ptr;
+{
+  register EMACS_INT size = ptr->size & PSEUDOVECTOR_SIZE_MASK;
+  register int i;
+
+  VECTOR_MARK (ptr);
+  for (i = 0; i < size; i++)
+    {
+      Lisp_Object val = ptr->contents[i];
+
+      if (INTEGERP (val) || SYMBOLP (val) && XSYMBOL (val)->gcmarkbit)
+        continue;
+      if (SUB_CHAR_TABLE_P (val))
+        {
+          if (! VECTOR_MARKED_P (XVECTOR (val)))
+            mark_char_table (XVECTOR (val));
+        }
+      else
+        mark_object (val);
+    }
+}
+
 void
 mark_object (arg)
      Lisp_Object arg;
@@ -5533,6 +5561,11 @@ mark_object (arg)
                 VECTOR_MARK (XVECTOR (h->key_and_value));
             }
         }
+      else if (CHAR_TABLE_P (obj))
+        {
+          if (! VECTOR_MARKED_P (XVECTOR (obj)))
+            mark_char_table (XVECTOR (obj));
+        }
       else
         mark_vectorlike (XVECTOR (obj));
       break;