Author: jilles
Date: Sun Jun 1 11:25:34 2014
New Revision: 266947
URL: http://svnweb.freebsd.org/changeset/base/266947
Log:
sh: Avoid undefined behaviour shifting negative values left in arithmetic.
With i386 base clang, arith_yacc.o remains unchanged.
Modified:
head/bin/sh/arith_yacc.c
Modified: head/bin/sh/arith_yacc.c
==============================================================================
--- head/bin/sh/arith_yacc.c Sun Jun 1 10:22:18 2014 (r266946)
+++ head/bin/sh/arith_yacc.c Sun Jun 1 11:25:34 2014 (r266947)
@@ -139,7 +139,7 @@ static arith_t do_binop(int op, arith_t
case ARITH_SUB:
return (uintmax_t)a - (uintmax_t)b;
case ARITH_LSHIFT:
- return a << b;
+ return (uintmax_t)a << b;
case ARITH_RSHIFT:
return a >> b;
case ARITH_LT:
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