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libiconv: correct undefined behavior.

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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
This commit is contained in:
pfg 2018-07-08 23:22:04 +00:00
parent 37704fa82d
commit dfb184115b
1 changed files with 2 additions and 2 deletions
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4
lib/libiconv_modules/mapper_std/citrus_mapper_std.c
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@ -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_rowcol *rc,
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;