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[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).

* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.

git/fs: mount .git/fs: mount/attach disallowed

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,9 @@

+2016-09-03  Werner Lemberg  <[email protected]>

+

+	[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).

+

+	* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.

+

 2016-09-02  Werner Lemberg  <[email protected]>

 	[unix] Enable 64bit support in file system access (#48962).

--- a/src/cff/cffload.c

+++ b/src/cff/cffload.c

@@ -602,7 +602,8 @@

     if ( !FT_ALLOC( name, byte_len + 1 ) )

     {

-      FT_MEM_COPY( name, bytes, byte_len );

+      if ( byte_len )

+        FT_MEM_COPY( name, bytes, byte_len );

       name[byte_len] = 0;

     }

     cff_index_forget_element( idx, &bytes );