test/test_runtime_misuse.c

// Copyright 2014 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 noted = 0;

EMSCRIPTEN_KEEPALIVE char* note(int n) {
  EM_ASM({ Module.noted = Number($0); out("set noted " + Module.noted) }, &noted);
  EM_ASM({ out([$0, $1]) }, n, noted);
  noted += n;
  EM_ASM({ out(['noted is now', $0]) }, noted);
  return (char*)"silly-string";
}

int main() {
  EM_ASM( myJSCallback() ); // calls a global JS func
  return 0;
}