svn commit: r218349 - stable/8/bin/sh
Jilles Tjoelker
jilles at FreeBSD.org
Sat Feb 5 21:40:57 UTC 2011
Author: jilles
Date: Sat Feb 5 21:40:57 2011
New Revision: 218349
URL: http://svn.freebsd.org/changeset/base/218349
Log:
MFC r215766: sh: Pass multiple bytes at a time to lex.
This speeds up the expansion/arith6.0 test considerably.
Modified:
stable/8/bin/sh/arith_lex.l
Directory Properties:
stable/8/bin/sh/ (props changed)
Modified: stable/8/bin/sh/arith_lex.l
==============================================================================
--- stable/8/bin/sh/arith_lex.l Sat Feb 5 21:39:14 2011 (r218348)
+++ stable/8/bin/sh/arith_lex.l Sat Feb 5 21:40:57 2011 (r218349)
@@ -60,7 +60,15 @@ static struct varname *varnames;
#undef YY_INPUT
#define YY_INPUT(buf,result,max) \
- result = (*buf = *arith_buf++) ? 1 : YY_NULL;
+ do { \
+ result = strnlen(arith_buf, max); \
+ if (result == 0) \
+ result = YY_NULL; \
+ else { \
+ memcpy(buf, arith_buf, result); \
+ arith_buf += result; \
+ } \
+ } while (0);
#define YY_NO_UNPUT
%}
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