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[freetype2] int-not32-changes-2017 c122d31 13/25: To make large unsigned
From: |
suzuki toshiya |
Subject: |
[freetype2] int-not32-changes-2017 c122d31 13/25: To make large unsigned 16bit value, temporal bit shift like (1 << 16) can induce an overflow. |
Date: |
Wed, 13 Sep 2017 04:15:05 -0400 (EDT) |
branch: int-not32-changes-2017
commit c122d3172c1906e1aec71afd34c2847e59625048
Author: suzuki toshiya <address@hidden>
Commit: suzuki toshiya <address@hidden>
To make large unsigned 16bit value, temporal bit shift like (1 << 16) can
induce an overflow.
Change to make 32bit value by bitshifting and cast to 16bit in later.
---
src/pfr/pfrload.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/pfr/pfrload.c b/src/pfr/pfrload.c
index 4f84165..53ce625 100644
--- a/src/pfr/pfrload.c
+++ b/src/pfr/pfrload.c
@@ -305,7 +305,7 @@
/* - we need at least 18 bytes for a log font record */
/* - the overall size is at least 95 bytes plus the */
/* log header and log font records */
- if ( count > ( ( 1 << 16 ) - 2 ) / 5 ||
+ if ( count > (FT_UInt)(( 1L << 16 ) - 2 ) / 5 ||
2 + count * 5 >= stream->size - section_offset ||
95 + count * ( 5 + 18 ) >= stream->size )
{
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- [freetype2] int-not32-changes-2017 c122d31 13/25: To make large unsigned 16bit value, temporal bit shift like (1 << 16) can induce an overflow.,
suzuki toshiya <=