unit tests: include an OpenSSL header before including cmocka.h

OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a redefined
malloc in cmocka.h.

As a workaround, include an OpenSSL header file before including
cmocka.h in the unit tests where OpenSSL is used.

(cherry picked from commit 87db9ea84c)

tests/dns/dh_test.c

@@ -19,6 +19,13 @@
 #include <string.h>
 #include <unistd.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>
 

tests/dns/dst_test.c

@@ -19,6 +19,13 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>
 

tests/dns/rsa_test.c

@@ -20,6 +20,13 @@
 #include <string.h>
 #include <unistd.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>
 

tests/isc/doh_test.c

@@ -22,6 +22,13 @@
 #include <unistd.h>
 #include <uv.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>
 

tests/isc/hmac_test.c

@@ -20,6 +20,13 @@
 #include <stdlib.h>
 #include <string.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>
 

tests/isc/netmgr_test.c

@@ -19,6 +19,13 @@
 #include <unistd.h>
 #include <uv.h>
 
+/*
+ * As a workaround, include an OpenSSL header file before including cmocka.h,
+ * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a
+ * redefined malloc in cmocka.h.
+ */
+#include <openssl/err.h>
+
 #define UNIT_TESTING
 #include <cmocka.h>