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[truetype] Better multi-threading support.

* src/truetype/ttinterp.c (TT_Load_Context): Reset glyph zone
references.

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

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,10 @@

+2010-11-26  Johnson Y. Yan  <[email protected]>

+

+	[truetype] Better multi-threading support.

+

+	* src/truetype/ttinterp.c (TT_Load_Context): Reset glyph zone

+	references.

+

 2010-11-23  John Tytgat  <[email protected]>

 	* src/psaux/t1decode.c (t1_decoder_parse_charstring): Expand

--- a/src/truetype/ttinterp.c

+++ b/src/truetype/ttinterp.c

@@ -595,6 +595,12 @@

       exec->storage   = size->storage;

       exec->twilight  = size->twilight;

+

+      /* In case of multi-threading it can happen that the old size object */

+      /* no longer exists, thus we must clear all glyph zone references.   */

+      ft_memset( &exec->zp0, 0, sizeof ( exec->zp0 ) );

+      exec->zp1 = exec->zp0;

+      exec->zp2 = exec->zp0;

     }

     /* XXX: We reserve a little more elements on the stack to deal safely */