Emscripten : 3.1.9: Uncaught RuntimeError: Aborted(No EM_ASM constant found at address 3470116)

[aharondavid]

In some reason, when I do any use in EM_ASM, I get an error:
Uncaught RuntimeError: Aborted(No EM_ASM constant found at address 3470116)
what can be the reason for that error ?

[sbc100]

Did this happen with previous version also, or is it new?

In general, it means that the JS runtime somehow is not aware of the EM_ARM code exported at link time from the wasm module. It should never happen, so something odd is going on.

Can you share you full link command line?

[sbc100]

What does the var ASM_CONSTS block in your generated JS code look like?

[aharondavid]

I did an undo to the changes and the error doesn't occur any more, if the error will come again, I will send the command line.
Thanks!

[aharondavid]

the error is come again: Uncaught RuntimeError: Aborted(No EM_ASM constant found at address 3471876)

linker flags: -s WASM_BIGINT -s OFFSCREEN_FRAMEBUFFER=1 -s OFFSCREENCANVAS_SUPPORT=1 -g --preload-file com.skyline.terraexplorer --bind -s USE_PTHREADS -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_RUNTIME_METHODS=ccall,cwrap -s EXPORTED_FUNCTIONS=_openFly,_main,_CreateTE4WEB -s PTHREAD_POOL_SIZE=30

the ASM_CONSTS:

var ASM_CONSTS = {
 3469924: function($0, $1) {
  var xhttp = new XMLHttpRequest();
  xhttp.open("GET", UTF8ToString($0), false);
  xhttp.overrideMimeType("text/plain; charset=x-user-defined");
  if ($1 != null) xhttp.send(UTF8ToString($1)); else xhttp.send();
  var response = xhttp.responseText;
  return response.length;
 },
 3470193: function($0, $1, $2) {
  var xhttp = new XMLHttpRequest();
  xhttp.open("GET", UTF8ToString($0), false);
  xhttp.overrideMimeType("text/plain; charset=x-user-defined");
  if ($1 != null) xhttp.send(UTF8ToString($1)); else xhttp.send();
  var response = xhttp.responseText;
  var len = response.length;
  for (var i = 0; i < len; i++) {
   var output = response.charCodeAt(i) & 255;
   setValue($2 + i, output, "i8");
  }
 },
 3470575: function($0, $1, $2, $3, $4, $5, $6, $7) {
  var context = Emval.toValue($7);
  var imageData = Emval.toValue($6);
  if (imageData.data.length != $2) {
   console.log("imageData.data.length!=BufferSize !!!!!");
  }
  var bit = 0;
  var sbit = "";
  switch ($5) {
  case 8:
   bit = 1;
   sbit = "i8";
   break;

  case 16:
   bit = 2;
   sbit = "i16";
   break;

  case 32:
   bit = 4;
   sbit = "i32";
   break;
  }
  var debug_pMemBuffer = "MemBuffer = ";
  for (var i = 0; i < $2; i++) {
   imageData.data[i] = getValue($1 + i, "i8");
   if (i < 20) debug_pMemBuffer += imageData.data[i] + ",";
  }
  console.log(debug_pMemBuffer);
  context.putImageData(imageData, 0, 0);
  context.stroke();
  var srcImageData = context.getImageData(0, 0, $3, $4);
  var len = srcImageData.data.length;
  var pMemContextBuffer = "ContextBuffer = ";
  for (var i = 0; i < len; i++) {
   setValue($0 + i, srcImageData.data[i], "i8");
   if (i < 20) pMemContextBuffer += srcImageData.data[i] + ",";
  }
  console.log(pMemContextBuffer);
 },
 3471464: function() {
  console.log("should be filled!");
 },
 3471501: function($0) {
  const encoded = encodeURI(UTF8ToString($0));
  return allocateUTF8(encoded);
 },
 3471580: function($0) {
  var Fr = document.getElementById("FR");
  Fr.innerText = $0;
 }
};

[aharondavid]

I don't know what is the reason for that, but clean rebuild fixed it