Author: jhibbits
Date: Tue Mar 20 02:01:30 2018
New Revision: 331233
URL: https://svnweb.freebsd.org/changeset/base/331233
Log:
Cast through uintptr_t to narrow the buf domain pointer on 32-bit archs
arg2 is an intmax_t, which on 32-bit architectures is 64 bits, wider than a
pointer. When &bdomain[i] is added to arg2 it widens from uintptr_t to
intmax_t, then gcc whines when it gets cast to a pointer. Casting through
uintptr_t silences this warning.
Modified:
head/sys/kern/vfs_bio.c
Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c Tue Mar 20 01:33:04 2018 (r331232)
+++ head/sys/kern/vfs_bio.c Tue Mar 20 02:01:30 2018 (r331233)
@@ -435,7 +435,7 @@ sysctl_bufdomain_int(SYSCTL_HANDLER_ARGS)
return (error);
*(int *)arg1 = value;
for (i = 0; i < buf_domains; i++)
- *(int *)(((uintptr_t)&bdomain[i]) + arg2) =
+ *(int *)(uintptr_t)(((uintptr_t)&bdomain[i]) + arg2) =
value / buf_domains;
return (error);
@@ -454,7 +454,7 @@ sysctl_bufdomain_long(SYSCTL_HANDLER_ARGS)
return (error);
*(long *)arg1 = value;
for (i = 0; i < buf_domains; i++)
- *(long *)(((uintptr_t)&bdomain[i]) + arg2) =
+ *(long *)(uintptr_t)(((uintptr_t)&bdomain[i]) + arg2) =
value / buf_domains;
return (error);
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