From: <[email protected]>
Date: Fri, May 3, 2019 at 1:41 AM
To: emscripten-discuss
> On Mon, Apr 29, 2019 at 18:23:48 UTC+2 Alon Zakai wrote:
>
> Glad you figured this out ! Can you please open a PR with your
> improvements?
>
> Sorry to say, but my proposals are not ready for a pull request.
> I proposed two possibilities to solve this issue:
>
> 1. Extend the existing implementation.
> 2. Switch to a C implementation.
>
> In both cases there are several questions open.
>
> - Are the maps used by the JavaScript implementation of
> getenv() and setenv() used elsewhere from JavaScript?
> - The current JavaScript implementation puts the whole
> environment into one block of data. Is this necessary?
> - My C implementation of getenv() and setenv() does not
> create the environment in one block of data. Is this
> acceptable?
>
> Somebody with more knowledge about Emscripten is probably
> able to use my proposals to write a solution.
>
> At the end the function setenv() should NEVER trigger:
>
> Error: Environment size exceeded TOTAL_ENV_SIZE!
>
> This is just not the way a C library function should work.
>
Technically according to the manpage setenv is allowed to fail with
out of memory:
ERRORS
EINVAL name is NULL, points to a string of length 0, or
contains an '=' character.
ENOMEM Insufficient memory to add a new variable to the environment.
However I imagine in this case you are seeing a bug in the
implementation rather than actual memory exhaustion so we probably do
need to fix emscripten.
> Regards,
> Thomas Mertes
>
> --
> Seed7 Homepage: http://seed7.sourceforge.net
> Seed7 - The extensible programming language: User defined statements
> and operators, abstract data types, templates without special
> syntax, OO with interfaces and multiple dispatch, statically typed,
> interpreted or compiled, portable, runs under linux/unix/windows.
>
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