Add spatch for isc_mem_strdup; it also cannot fail gracefully

diff --git a/cocci/isc_mem_strdup_never_fail.spatch b/cocci/isc_mem_strdup_never_fail.spatch
new file mode 100644 (file)
index 0000000..41cccdb
--- /dev/null
+++ b/cocci/isc_mem_strdup_never_fail.spatch
@@ -0,0 +1,33 @@
+@@
+statement S;
+expression V;
+@@
+
+V = isc_mem_strdup(...);
+- if (V == NULL) S
+
+@@
+type T;
+statement S;
+expression V;
+@@
+
+V = (T *)isc_mem_strdup(...);
+- if (V == NULL) S
+
+@@
+statement S;
+expression V;
+@@
+
+if (V == NULL) V = isc_mem_strdup(...);
+- if (V == NULL) S
+
+@@
+statement S1, S2;
+expression V;
+@@
+
+V = isc_mem_strdup(...);
+- if (V == NULL) S1 else { S2 }
++ S2