cred: isolate scripts in WASI and move RSA signing to AWS-LC

host/cred-script/vendor/rquickjs-sys/quickjs/fuzz.c

@@ -0,0 +1,22 @@
+// clang -g -O1 -fsanitize=fuzzer -o fuzz fuzz.c
+#include "quickjs.h"
+#include "quickjs.c"
+#include "cutils.c"
+#include "libregexp.c"
+#include "libunicode.c"
+#include <stdlib.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)
+{
+    JSRuntime *rt = JS_NewRuntime();
+    if (!rt)
+        exit(1);
+    JSContext *ctx = JS_NewContext(rt);
+    if (!ctx)
+        exit(1);
+    JSValue val = JS_ReadObject(ctx, buf, len, /*flags*/0);
+    JS_FreeValue(ctx, val);
+    JS_FreeContext(ctx);
+    JS_FreeRuntime(rt);
+    return 0;
+}