Linux build error "retrieve: program binary cache file is corrupted. Ignoring and removing."

[elvisish]

Tested versions

3.5.3.stable

System information

Linux Mint Cinnamon

Issue description

I'm getting an error retrieve: program vinary cache file is corrupted. Ignoring and removing. when I test my level in Linux, this error does not occur at all in Windows, and I can't actually find any information about this error message outside of it appearing in the debug window. It happens several times so I assume it's occurring for each and every shader I'm using in my scene. Here's the full error:

E 0:00:15.373   retrieve: Program binary cache file is corrupted. Ignoring and removing.
  <C++ Source>  drivers/gles3/shader_cache_gles3.cpp:74 @ retrieve()

Steps to reproduce

Run game in Linux.

Minimal reproduction project (MRP)

N/A

[lawnjelly]

You also mentioned in a message that this was occurring on SteamDeck, which could be relevant.

It doesn't seem to occur for me (Linux Mint) running the same project.

I am wondering whether it could be a permissions issue (but I'm surprised then that fa isn't returning false, but whether it is using the bool operator I'm not sure, it would be nice to debug):

	FileAccessRef fa = FileAccess::open(storage_path.plus_file(p_program_hash), FileAccess::READ_WRITE);
	if (!fa) {
		return false;
	}

	*r_format = fa->get_32();
	uint32_t binary_len = fa->get_32();
	if (binary_len <= 0 || binary_len > 0x10000000) {
		ERR_PRINT("Program binary cache file is corrupted. Ignoring and removing.");
		fa->close();
		storage_da->remove(p_program_hash);
		return false;
	}

[AThousandShips]

It might be that it doesn't check for permissions correctly when using READ_WRITE

[lawnjelly]

Also MRP is always useful, even if it's a basic project, just to eliminate other possible causes in a complex program. Especially as in this case it may be difficult to reproduce.

[elvisish]

Also MRP is always useful, even if it's a basic project, just to eliminate other possible causes in a complex program. Especially as in this case it may be difficult to reproduce.

I know, I'll see if I can cut down my project into the basics for testing.

It might be that it doesn't check for permissions correctly when using READ_WRITE

Is it possible to change this for testing?