extremely cursed data sharing with memfd and mmap

wasm_apps/read_memfd.c

+#include <stdio.h>
+#include <stdlib.h>
+
+#define import(name) __attribute__((import_name(name)))
+#define export(name) __attribute__((export_name(name))) __attribute__((visibility("default")))
+
+import("native_map_shared")
+extern void *native_map_shared();
+
+export("main")
+int main(){
+    void *ptr = native_map_shared();
+    printf("pointer %p\n", ptr);
+    printf("value: %s\n", (char *) ptr);
+}
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