Fix Savannah bug #30235.

* src/pfr/pfrgload.c (pfr_glyph_load_simple): Protect against
invalid indices if there aren't any coordinates for indexing.

ChangeLog

@@ -1,3 +1,10 @@
+2010-06-24  Werner Lemberg  <wl@gnu.org>
+
+	Fix Savannah bug #30235.
+
+	* src/pfr/pfrgload.c (pfr_glyph_load_simple): Protect against
+	invalid indices if there aren't any coordinates for indexing.
+
 2010-06-24  Werner Lemberg  <wl@gnu.org>
 
 	[bdf]: Font properties are optional.

src/pfr/pfrgload.c

@@ -388,7 +388,7 @@
 
         case 2:                             /* horizontal line to */
           FT_TRACE6(( "- horizontal line to cx.%d", format_low ));
-          if ( format_low > x_count )
+          if ( format_low > x_count || x_count == 0 )
             goto Failure;
           pos[0].x   = glyph->x_control[format_low];
           pos[0].y   = pos[3].y;
@@ -398,7 +398,7 @@
 
         case 3:                             /* vertical line to */
           FT_TRACE6(( "- vertical line to cy.%d", format_low ));
-          if ( format_low > y_count )
+          if ( format_low > y_count || y_count == 0 )
             goto Failure;
           pos[0].x   = pos[3].x;
           pos[0].y   = glyph->y_control[format_low];
@@ -440,7 +440,7 @@
           case 0:                           /* 8-bit index */
             PFR_CHECK( 1 );
             idx  = PFR_NEXT_BYTE( p );
-            if ( idx > x_count )
+            if ( idx > x_count || x_count == 0 )
               goto Failure;
             cur->x = glyph->x_control[idx];
             FT_TRACE7(( " cx#%d", idx ));
@@ -470,7 +470,7 @@
           case 0:                           /* 8-bit index */
             PFR_CHECK( 1 );
             idx  = PFR_NEXT_BYTE( p );
-            if ( idx > y_count )
+            if ( idx > y_count || y_count == 0 )
               goto Failure;
             cur->y = glyph->y_control[idx];
             FT_TRACE7(( " cy#%d", idx ));