Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/gxvalid/gxvmod.c

Index: third_party/freetype2/src/src/gxvalid/gxvmod.c
diff --git a/third_party/freetype2/src/src/gxvalid/gxvmod.c b/third_party/freetype2/src/src/gxvalid/gxvmod.c
new file mode 100644
index 0000000000000000000000000000000000000000..fe8efdf3d93500c480cf0b3030c7e34e478d415b
--- /dev/null
+++ b/third_party/freetype2/src/src/gxvalid/gxvmod.c
@@ -0,0 +1,285 @@
+/***************************************************************************/
+/*                                                                         */
+/*  gxvmod.c                                                               */
+/*                                                                         */
+/*    FreeType's TrueTypeGX/AAT validation module implementation (body).   */
+/*                                                                         */
+/*  Copyright 2004-2015 by                                                 */
+/*  suzuki toshiya, Masatake YAMATO, Red Hat K.K.,                         */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+/***************************************************************************/
+/*                                                                         */
+/* gxvalid is derived from both gxlayout module and otvalid module.        */
+/* Development of gxlayout is supported by the Information-technology      */
+/* Promotion Agency(IPA), Japan.                                           */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_TRUETYPE_TABLES_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_GX_VALIDATE_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_SERVICE_GX_VALIDATE_H
+
+#include "gxvmod.h"
+#include "gxvalid.h"
+#include "gxvcommn.h"
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_gxvmodule
+
+
+  static FT_Error
+  gxv_load_table( FT_Face             face,
+                  FT_Tag              tag,
+                  FT_Byte* volatile*  table,
+                  FT_ULong*           table_len )
+  {
+    FT_Error   error;
+    FT_Memory  memory = FT_FACE_MEMORY( face );
+
+
+    error = FT_Load_Sfnt_Table( face, tag, 0, NULL, table_len );
+    if ( FT_ERR_EQ( error, Table_Missing ) )
+      return FT_Err_Ok;
+    if ( error )
+      goto Exit;
+
+    if ( FT_ALLOC( *table, *table_len ) )
+      goto Exit;
+
+    error = FT_Load_Sfnt_Table( face, tag, 0, *table, table_len );
+
+  Exit:
+    return error;
+  }
+
+
+#define GXV_TABLE_DECL( _sfnt )                     \
+          FT_Byte* volatile  _sfnt          = NULL; \
+          FT_ULong            len_ ## _sfnt = 0
+
+#define GXV_TABLE_LOAD( _sfnt )                                     \
+          if ( ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count ) && \
+               ( gx_flags & FT_VALIDATE_ ## _sfnt )            )    \
+          {                                                         \
+            error = gxv_load_table( face, TTAG_ ## _sfnt,           \
+                                    &_sfnt, &len_ ## _sfnt );       \
+            if ( error )                                            \
+              goto Exit;                                            \
+          }
+
+#define GXV_TABLE_VALIDATE( _sfnt )                                  \
+          if ( _sfnt )                                               \
+          {                                                          \
+            ft_validator_init( &valid, _sfnt, _sfnt + len_ ## _sfnt, \
+                               FT_VALIDATE_DEFAULT );                \
+            if ( ft_setjmp( valid.jump_buffer ) == 0 )               \
+              gxv_ ## _sfnt ## _validate( _sfnt, face, &valid );     \
+            error = valid.error;                                     \
+            if ( error )                                             \
+              goto Exit;                                             \
+          }
+
+#define GXV_TABLE_SET( _sfnt )                                        \
+          if ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count )        \
+            tables[FT_VALIDATE_ ## _sfnt ## _INDEX] = (FT_Bytes)_sfnt
+
+
+  static FT_Error
+  gxv_validate( FT_Face   face,
+                FT_UInt   gx_flags,
+                FT_Bytes  tables[FT_VALIDATE_GX_LENGTH],
+                FT_UInt   table_count )
+  {
+    FT_Memory volatile        memory = FT_FACE_MEMORY( face );
+
+    FT_Error                  error = FT_Err_Ok;
+    FT_ValidatorRec volatile  valid;
+
+    FT_UInt  i;
+
+
+    GXV_TABLE_DECL( feat );
+    GXV_TABLE_DECL( bsln );
+    GXV_TABLE_DECL( trak );
+    GXV_TABLE_DECL( just );
+    GXV_TABLE_DECL( mort );
+    GXV_TABLE_DECL( morx );
+    GXV_TABLE_DECL( kern );
+    GXV_TABLE_DECL( opbd );
+    GXV_TABLE_DECL( prop );
+    GXV_TABLE_DECL( lcar );
+
+    for ( i = 0; i < table_count; i++ )
+      tables[i] = 0;
+
+    /* load tables */
+    GXV_TABLE_LOAD( feat );
+    GXV_TABLE_LOAD( bsln );
+    GXV_TABLE_LOAD( trak );
+    GXV_TABLE_LOAD( just );
+    GXV_TABLE_LOAD( mort );
+    GXV_TABLE_LOAD( morx );
+    GXV_TABLE_LOAD( kern );
+    GXV_TABLE_LOAD( opbd );
+    GXV_TABLE_LOAD( prop );
+    GXV_TABLE_LOAD( lcar );
+
+    /* validate tables */
+    GXV_TABLE_VALIDATE( feat );
+    GXV_TABLE_VALIDATE( bsln );
+    GXV_TABLE_VALIDATE( trak );
+    GXV_TABLE_VALIDATE( just );
+    GXV_TABLE_VALIDATE( mort );
+    GXV_TABLE_VALIDATE( morx );
+    GXV_TABLE_VALIDATE( kern );
+    GXV_TABLE_VALIDATE( opbd );
+    GXV_TABLE_VALIDATE( prop );
+    GXV_TABLE_VALIDATE( lcar );
+
+    /* Set results */
+    GXV_TABLE_SET( feat );
+    GXV_TABLE_SET( mort );
+    GXV_TABLE_SET( morx );
+    GXV_TABLE_SET( bsln );
+    GXV_TABLE_SET( just );
+    GXV_TABLE_SET( kern );
+    GXV_TABLE_SET( opbd );
+    GXV_TABLE_SET( trak );
+    GXV_TABLE_SET( prop );
+    GXV_TABLE_SET( lcar );
+
+  Exit:
+    if ( error )
+    {
+      FT_FREE( feat );
+      FT_FREE( bsln );
+      FT_FREE( trak );
+      FT_FREE( just );
+      FT_FREE( mort );
+      FT_FREE( morx );
+      FT_FREE( kern );
+      FT_FREE( opbd );
+      FT_FREE( prop );
+      FT_FREE( lcar );
+    }
+
+    return error;
+  }
+
+
+  static FT_Error
+  classic_kern_validate( FT_Face    face,
+                         FT_UInt    ckern_flags,
+                         FT_Bytes*  ckern_table )
+  {
+    FT_Memory volatile        memory = FT_FACE_MEMORY( face );
+
+    FT_Byte* volatile         ckern     = NULL;
+    FT_ULong                  len_ckern = 0;
+
+    /* without volatile on `error' GCC 4.1.1. emits:                         */
+    /*  warning: variable 'error' might be clobbered by 'longjmp' or 'vfork' */
+    /* this warning seems spurious but ---                                   */
+    FT_Error volatile         error;
+    FT_ValidatorRec volatile  valid;
+
+
+    *ckern_table = NULL;
+
+    error = gxv_load_table( face, TTAG_kern, &ckern, &len_ckern );
+    if ( error )
+      goto Exit;
+
+    if ( ckern )
+    {
+      ft_validator_init( &valid, ckern, ckern + len_ckern,
+                         FT_VALIDATE_DEFAULT );
+      if ( ft_setjmp( valid.jump_buffer ) == 0 )
+        gxv_kern_validate_classic( ckern, face,
+                                   ckern_flags & FT_VALIDATE_CKERN, &valid );
+      error = valid.error;
+      if ( error )
+        goto Exit;
+    }
+
+    *ckern_table = ckern;
+
+  Exit:
+    if ( error )
+      FT_FREE( ckern );
+
+    return error;
+  }
+
+
+  static
+  const FT_Service_GXvalidateRec  gxvalid_interface =
+  {
+    gxv_validate              /* validate */
+  };
+
+
+  static
+  const FT_Service_CKERNvalidateRec  ckernvalid_interface =
+  {
+    classic_kern_validate     /* validate */
+  };
+
+
+  static
+  const FT_ServiceDescRec  gxvalid_services[] =
+  {
+    { FT_SERVICE_ID_GX_VALIDATE,          &gxvalid_interface },
+    { FT_SERVICE_ID_CLASSICKERN_VALIDATE, &ckernvalid_interface },
+    { NULL, NULL }
+  };
+
+
+  static FT_Pointer
+  gxvalid_get_service( FT_Module    module,
+                       const char*  service_id )
+  {
+    FT_UNUSED( module );
+
+    return ft_service_list_lookup( gxvalid_services, service_id );
+  }
+
+
+  FT_CALLBACK_TABLE_DEF
+  const FT_Module_Class  gxv_module_class =
+  {
+    0,
+    sizeof ( FT_ModuleRec ),
+    "gxvalid",
+    0x10000L,
+    0x20000L,
+
+    0,              /* module-specific interface */
+
+    (FT_Module_Constructor)0,
+    (FT_Module_Destructor) 0,
+    (FT_Module_Requester)  gxvalid_get_service
+  };
+
+
+/* END */