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[cff] Fix usage of `|' operator. 

* src/cff/cf2intrp.c (cf2_interpT2CharString) [cf2_cmdEXTENDEDNMBR,
default]: `|' is not guaranteed to be processed from left to right
by the compiler.  However, the code repeatedly calls
`cf2_buf_readByte' to get the arguments to `|' ...  Fix this.
This commit is contained in:
Jered Gray 2016-01-10 12:03:36 +01:00 committed by Werner Lemberg
parent 2e09812c51
commit f53bab9381
2 changed files with 23 additions and 7 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2016-01-10 Jered Gray <jegray@google.com>
[cff] Fix usage of `|' operator.
* src/cff/cf2intrp.c (cf2_interpT2CharString) [cf2_cmdEXTENDEDNMBR,
default]: `|' is not guaranteed to be processed from left to right
by the compiler. However, the code repeatedly calls
`cf2_buf_readByte' to get the arguments to `|' ... Fix this.
2015-12-25 Werner Lemberg <wl@gnu.org>
[autofit] Make top-to-bottom hinting work in latin auto-hinter.

21
src/cff/cf2intrp.c
View File

@ -1463,9 +1463,12 @@
{
CF2_Int v;
CF2_Int byte1 = cf2_buf_readByte( charstring );
CF2_Int byte2 = cf2_buf_readByte( charstring );
v = (FT_Short)( ( cf2_buf_readByte( charstring ) << 8 ) |
cf2_buf_readByte( charstring ) );
v = (FT_Short)( ( byte1 << 8 ) |
byte2 );
FT_TRACE4(( " %d", v ));
@ -1527,12 +1530,16 @@
{
CF2_Fixed v;
FT_UInt32 byte1 = (FT_UInt32)cf2_buf_readByte( charstring );
FT_UInt32 byte2 = (FT_UInt32)cf2_buf_readByte( charstring );
FT_UInt32 byte3 = (FT_UInt32)cf2_buf_readByte( charstring );
FT_UInt32 byte4 = (FT_UInt32)cf2_buf_readByte( charstring );
v = (CF2_Fixed)
( ( (FT_UInt32)cf2_buf_readByte( charstring ) << 24 ) |
( (FT_UInt32)cf2_buf_readByte( charstring ) << 16 ) |
( (FT_UInt32)cf2_buf_readByte( charstring ) << 8 ) |
(FT_UInt32)cf2_buf_readByte( charstring ) );
v = (CF2_Fixed)( ( byte1 << 24 ) |
( byte2 << 16 ) |
( byte3 << 8 ) |
byte4 );
FT_TRACE4(( " %.2f", v / 65536.0 ));