svn commit: r336115 - head/lib/libiconv_modules/mapper_std

[Pedro F. Giffuni]

Author: pfg
Date: Sun Jul  8 23:22:04 2018
New Revision: 336115
URL: https://svnweb.freebsd.org/changeset/base/336115

Log:
  libiconv: correct undefined behavior.
  
  Detected on NetBSD:
  # nm /usr/lib/libc.so|grep sanit
      /public/src.git/lib/libc/citrus/modules/citrus_mapper_std.c:173:8:
  runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
  
  Obtained from:	NetBSD (CVS Rev. 1.11)
  MFC after:	1 week

Modified:
  head/lib/libiconv_modules/mapper_std/citrus_mapper_std.c

Modified: head/lib/libiconv_modules/mapper_std/citrus_mapper_std.c
==============================================================================
--- head/lib/libiconv_modules/mapper_std/citrus_mapper_std.c	Sun Jul  8 23:12:27 2018	(r336114)
+++ head/lib/libiconv_modules/mapper_std/citrus_mapper_std.c	Sun Jul  8 23:22:04 2018	(r336115)
@@ -1,5 +1,5 @@
 /* $FreeBSD$ */
-/*	$NetBSD: citrus_mapper_std.c,v 1.10 2011/11/19 18:48:39 tnozaki Exp $	*/
+/*	$NetBSD: citrus_mapper_std.c,v 1.11 2018/06/11 18:03:38 kamil Exp $ */
 
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
@@ -161,7 +161,7 @@ rowcol_parse_variable_compat(struct _citrus_mapper_std
 	rc->rc_dst_invalid = be32toh(rcx->rcx_dst_invalid);
 	rc->rc_dst_unit_bits = be32toh(rcx->rcx_dst_unit_bits);
 	m = be32toh(rcx->rcx_src_col_bits);
-	n = 1 << (m - 1);
+	n = 1U << (m - 1);
 	n |= n - 1;
 	rc->rc_src_rowcol_bits = m;
 	rc->rc_src_rowcol_mask = n;