testing out macro magic to support positional, and keyword arguments with arbitrary default values

makefile

@@ -1,6 +1,6 @@
 
 CC := gcc
-CFLAGS := -Wall -Wextra -O2 -fsanitize=address
+CFLAGS := -Wall -Wextra -Wno-override-init -O2 -fsanitize=address
 LDFLAGS := -lcriterion
 
 TESTBIN := /tmp/all_tests

test_macro_magic.c

@@ -0,0 +1,20 @@
+#include <criterion/criterion.h>
+
+enum animal {
+    dog,
+    cat,
+};
+
+typedef struct args {
+    enum animal animal;
+} args_t;
+
+#define ARGS_DEFAULT .animal=cat
+#define ARGS(...) ((args_t){ ARGS_DEFAULT, __VA_ARGS__ })
+
+Test(macro_magic, default_values) {
+    args_t a1 = ARGS();
+    args_t a2 = ARGS(.animal=dog);
+    cr_assert_eq(a1.animal, cat);
+    cr_assert_eq(a2.animal, dog);
+}