is allocateUTF8 safe to use ?

[lovasoa]

In sql.js, we use the allocateUTF8OnStack function, and it works. However, the function is nowhere to be found in the official API documentation. Is this an oversight, or is there a reason the function should not be used outside of emscripten itself ?

[lovasoa]

We also use stackSave and stackRestore. Is there a reason they are not documented ?

[stale]

This issue has been automatically marked as stale because there has been no activity in the past year. It will be closed automatically if no further activity occurs in the next 30 days. Feel free to re-open at any time if this issue is still relevant.

[lovasoa]

@kripken ?

[kripken]

I don't think there's a reason they are not documented. They are internal APIs so they may change in theory, but they have also been part of the internal API for quite a long time.

Hopefully someone will add docs, I'll add some tags to this issue.

[stale]

This issue has been automatically marked as stale because there has been no activity in the past year. It will be closed automatically if no further activity occurs in the next 30 days. Feel free to re-open at any time if this issue is still relevant.

[dhdaines]

Well, these functions seem to have disappeared, so I guess we weren't supposed to use them?

Can anybody suggest any alternative, or am I just too dense to decipher the (lack of) documentation that will tell me how to access them from a pre-js or post-js?

[dhdaines]

Added a comment about this on #17403 which seems to be the culprit here. If there's a workaround please let me know.

[sbc100]

These days you need to explicitly opt into these library functions:

emscripten/ChangeLog.md

Lines 70 to 73 in 7b9747e

	- The `LEGACY_RUNTIME` setting is no longer enabled by default. If you use any
	of these legacy runtime functions (except in library code with explicit
	dependencies) then you would need to set `LEGACY_RUNTIME` on the command line
	or add the ones you need to `DEFAULT_LIBRARY_FUNCS_TO_INCLUDE`:

[dhdaines]

Thanks! You should mention somewhere that they also need the leading dollar sign...