[DTrace-devel] [PATCH] Check dt_rec_add() alignment is reasonable

[eugene.loh at oracle.com]

From: Eugene Loh <eugene.loh at oracle.com>

Signed-off-by: Eugene Loh <eugene.loh at oracle.com>
---
 libdtrace/dt_map.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libdtrace/dt_map.c b/libdtrace/dt_map.c
index b7f067fb..70e7b03b 100644
--- a/libdtrace/dt_map.c
+++ b/libdtrace/dt_map.c
@@ -190,6 +190,9 @@ dt_rec_add(dtrace_hdl_t *dtp, dt_cg_gap_f gapf, dtrace_actkind_t kind,
 	int			cnt, max;
 
 	assert(gapf);
+	assert(alignment > 0
+	    && alignment <= 8
+	    && (alignment & (alignment - 1)) == 0);
 
 	/* make more space if necessary */
 	cnt = ddp->dtdd_nrecs + 1;
-- 
2.18.4