Isolated emscripten in new lib

lib/emscripten/emtests/test_statics.c

@@ -0,0 +1,42 @@
+/*
+ * 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 <string.h>
+
+#define CONSTRLEN 32
+
+char *(*func)(char *, const char *) = NULL;
+
+void conoutfv(const char *fmt) {
+  static char buf[CONSTRLEN];
+  func(buf, fmt);  // call by function pointer to make sure we test strcpy here
+  puts(buf);
+}
+
+struct XYZ {
+  float x, y, z;
+  XYZ(float a, float b, float c) : x(a), y(b), z(c) {}
+  static const XYZ &getIdentity() {
+    static XYZ iT(1, 2, 3);
+    return iT;
+  }
+};
+struct S {
+  static const XYZ &getIdentity() {
+    static const XYZ iT(XYZ::getIdentity());
+    return iT;
+  }
+};
+
+int main() {
+  func = &strcpy;
+  conoutfv("*staticccz*");
+  printf("*%.2f,%.2f,%.2f*\n", S::getIdentity().x, S::getIdentity().y,
+         S::getIdentity().z);
+  return 0;
+}