diff --git a/tools/coccinelle/cast_to_larger_sizes.cocci b/tools/coccinelle/cast_to_larger_sizes.cocci
new file mode 100644
index 0000000000..d97e1f9c33
--- /dev/null
+++ b/tools/coccinelle/cast_to_larger_sizes.cocci
@@ -0,0 +1,20 @@
+// spatch -sp_file tools/coccinelle/cast_to_larger_sizes.cocci --recursive-includes ./
+
+@r@
+typedef uint8_t;
+typedef uint16_t;
+typedef uint32_t;
+typedef uint64_t;
+uint8_t *i8;
+position p;
+@@
+
+ \(
+  (uint64_t *) i8@p\|(uint32_t *) i8@p\|(uint16_t *) i8@p
+ \)
+
+@script:python@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0],"Bad typecast to larger size")