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[freetype2] master 03b0cc2: [bdf] Don't left-shift negative numbers.


From: Werner LEMBERG
Subject: [freetype2] master 03b0cc2: [bdf] Don't left-shift negative numbers.
Date: Fri, 2 Jun 2017 03:17:23 -0400 (EDT)

branch: master
commit 03b0cc2ea9b63f57ec58f77d8cc1350691d7140a
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    [bdf] Don't left-shift negative numbers.
    
    Reported as
    
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2031
    
    * src/bdf/bdfdrivr.c (BDF_Face_Init): Use multiplication.
---
 ChangeLog          | 10 ++++++++++
 src/bdf/bdfdrivr.c |  4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 6d921ba..6194a2f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
 2017-06-02  Werner Lemberg  <address@hidden>
 
+       [bdf] Don't left-shift negative numbers.
+
+       Reported as
+
+         https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2031
+
+       * src/bdf/bdfdrivr.c (BDF_Face_Init): Use multiplication.
+
+2017-06-02  Werner Lemberg  <address@hidden>
+
        [bdf] Fix integer scanning routines.
 
        Reported as
diff --git a/src/bdf/bdfdrivr.c b/src/bdf/bdfdrivr.c
index c0a5a5c..540d367 100644
--- a/src/bdf/bdfdrivr.c
+++ b/src/bdf/bdfdrivr.c
@@ -455,11 +455,11 @@ THE SOFTWARE.
           bsize->size =
             (FT_Pos)( ( prop->value.l * 64 * 7200 + 36135L ) / 72270L );
         else
-          bsize->size = bsize->width << 6;
+          bsize->size = bsize->width * 64;
 
         prop = bdf_get_font_property( font, "PIXEL_SIZE" );
         if ( prop )
-          bsize->y_ppem = (FT_Short)prop->value.l << 6;
+          bsize->y_ppem = (FT_Short)prop->value.l * 64;
 
         prop = bdf_get_font_property( font, "RESOLUTION_X" );
         if ( prop )



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