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-rw-r--r--sutils/swapon.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sutils/swapon.c b/sutils/swapon.c
index d6580bef..fb264bc6 100644
--- a/sutils/swapon.c
+++ b/sutils/swapon.c
@@ -87,6 +87,8 @@ swaponoff (const char *file, int add)
mach_port_deallocate (mach_task_self (), host);
if (err)
error (13, err, "Cannot get default pager port");
+ if (def_pager == MACH_PORT_NULL)
+ error (14, 0, "No default pager (memory manager) is running!");
}
{