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fix an integer promotion bug on 64 bit ports. 

(signed + unsigned = unsigned)
This commit is contained in:
yamt 2011-10-12 00:03:47 +00:00
parent 8ddce5912c
commit 4e27ff24fc
1 changed files with 3 additions and 3 deletions
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6
sys/uvm/uvm_mmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_mmap.c,v 1.137 2011/06/23 23:42:44 matt Exp $ */
/* $NetBSD: uvm_mmap.c,v 1.138 2011/10/12 00:03:47 yamt Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -46,7 +46,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_mmap.c,v 1.137 2011/06/23 23:42:44 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_mmap.c,v 1.138 2011/10/12 00:03:47 yamt Exp $");
#include "opt_compat_netbsd.h"
#include "opt_pax.h"
@ -395,7 +395,7 @@ sys_mmap(struct lwp *l, const struct sys_mmap_args *uap, register_t *retval)
fd_putfile(fd);
return (EINVAL);
}
if (vp->v_type != VCHR && (pos + size) < pos) {
if (vp->v_type != VCHR && (off_t)(pos + size) < pos) {
fd_putfile(fd);
return (EOVERFLOW); /* no offset wrapping */
}