Isolated emscripten in new lib

lib/emscripten/emtests/test_utf.c

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2016 The Emscripten Authors.  All rights reserved.
+ * Emscripten is available under two separate licenses, the MIT license and the
+ * University of Illinois/NCSA Open Source License.  Both these licenses can be
+ * found in the LICENSE file.
+ */
+
+#include <stdio.h>
+#include <emscripten.h>
+
+int main() {
+  char *c = "μ†ℱ ╋ℯ╳╋ 😇";
+  printf("%d %d %d %d %s\n", c[0] & 0xff, c[1] & 0xff, c[2] & 0xff, c[3] & 0xff,
+         c);
+  emscripten_run_script(
+      "cheez = _malloc(100);"
+      "Module.stringToUTF8(\"μ†ℱ ╋ℯ╳╋ 😇\", cheez, 100);"
+      "out([Pointer_stringify(cheez), Module.getValue(cheez, "
+      "'i8')&0xff, Module.getValue(cheez+1, 'i8')&0xff, "
+      "Module.getValue(cheez+2, 'i8')&0xff, Module.getValue(cheez+3, "
+      "'i8')&0xff].join(','));");
+}