--preload-file not loading data

[Gareth Aye]

Hello!

First off, thank you all for your work on emscripten -- such an awesome and exciting tool!

The specific issue I'm writing about has to do with emcc's --preload-file option. My .data file gets created and I'm successfully running my generated code in a web worker, but the data that's supposed to be injected into MEMFS never winds up there. I can see the .data file gets fetched from the server, but when I try FS.readFile (after Module.main has been run), I get

Array [ ".", "..", "tmp", "home", "dev", "proc" ]

which doesn't include my application data. Are there size issues and/or limits at play here? My .data file is quite large (54M).

Anyway I'm having a lot of fun hacking around with the compiler. Great work!

-Gareth

[Gareth Aye]

To add a bit more context, I'm running the js that emcc produces within a web worker (but not using https://kripken.github.io/emscripten-site/docs/api_reference/emscripten.h.html#worker-api).

[Gareth Aye]

Er when I mentioned FS.readFile, what I really meant was FS.readdir('/') gives Array [ ".", "..", "tmp", "home", "dev", "proc" ] notably lacking my preload data.

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[Alon Zakai]

There shouldn't be a size limit, but maybe a browser has a bug there. Does it work in other browsers? Perhaps something shows up in the web console? And worth checking with smaller files (up until the hello world example in the tutorial) to see where things start to break for you.

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