[src/trunk]: src/lib/libc/citrus/modules Correct Undefined Behavior in libc/c...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ea717184fd22
branches:  trunk
changeset: 319785:ea717184fd22
user:      kamil <kamil%NetBSD.org@localhost>
date:      Mon Jun 11 18:03:38 2018 +0000

description:
Correct Undefined Behavior in libc/citrus

Unportable left shift reported with MKSANITIZER=yes USE_SANITIZER=undefined:

# 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'

Sponsored by <The NetBSD Foundation>

diffstat:

 lib/libc/citrus/modules/citrus_mapper_std.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 8602df74e4de -r ea717184fd22 lib/libc/citrus/modules/citrus_mapper_std.c
--- a/lib/libc/citrus/modules/citrus_mapper_std.c       Mon Jun 11 17:45:50 2018 +0000
+++ b/lib/libc/citrus/modules/citrus_mapper_std.c       Mon Jun 11 18:03:38 2018 +0000
@@ -1,4 +1,4 @@
-/*     $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 $     */
 
 /*-
  * Copyright (c)2003, 2006 Citrus Project,
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: citrus_mapper_std.c,v 1.10 2011/11/19 18:48:39 tnozaki Exp $");
+__RCSID("$NetBSD: citrus_mapper_std.c,v 1.11 2018/06/11 18:03:38 kamil Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include <assert.h>
@@ -170,7 +170,7 @@
        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;