Date: Sun, 1 Jun 2014 11:25:34 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r266947 - head/bin/sh Message-ID: <201406011125.s51BPYxp011152@svn.freebsd.org>
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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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