restricted c header imports

examples/interop/header/native.c

@@ -0,0 +1,33 @@
+#include "include/native.h"
+
+struct Imported_Handle {
+	int value;
+};
+
+static struct Imported_Handle handle = {7};
+
+int child_value(int value) {
+	return value;
+}
+
+int imported_add(imported_int left, int right) {
+	return left + right;
+}
+
+unsigned long imported_scalar(unsigned char value, unsigned long extra) {
+	return value + extra;
+}
+
+Imported_Handle *imported_handle(void) {
+	return &handle;
+}
+
+int imported_read(const Imported_Handle *value) {
+	return value->value;
+}
+
+#ifdef BROLANG_FEATURE
+int configured_value(int value) {
+	return value;
+}
+#endif