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[freetype2] master 0f0a6bb: [sfnt] Ignore embedded bitmaps with zero siz


From: Werner LEMBERG
Subject: [freetype2] master 0f0a6bb: [sfnt] Ignore embedded bitmaps with zero size (#46379).
Date: Thu, 05 Nov 2015 12:48:23 +0000

branch: master
commit 0f0a6bb8aaae07c4105ac4d6ee26fd8eda946b3e
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    [sfnt] Ignore embedded bitmaps with zero size (#46379).
    
    * src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Implement
    it.
---
 ChangeLog         |    7 +++++++
 src/sfnt/ttsbit.c |    6 ++++++
 2 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 558a669..cc8ba89 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2015-11-05  Werner Lemberg  <address@hidden>
+
+       [sfnt] Ignore embedded bitmaps with zero size (#46379).
+
+       * src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Implement
+       it.
+
 2015-11-04  Werner Lemberg  <address@hidden>
 
        [truetype] Catch infinite recursion in subglyphs (#46372).
diff --git a/src/sfnt/ttsbit.c b/src/sfnt/ttsbit.c
index acc18f0..62bce3c 100644
--- a/src/sfnt/ttsbit.c
+++ b/src/sfnt/ttsbit.c
@@ -808,6 +808,12 @@
       goto Exit;
     }
 
+    if ( !line_bits || !height )
+    {
+      /* nothing to do */
+      goto Exit;
+    }
+
     /* now do the blit */
 
     /* adjust `line' to point to the first byte of the bitmap */



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