Possible Safari browser bug breaks asynchronous WebAssembly build

[rhashimoto]

Using an asynchronous wa-sqlite build has been observed to cause a "Maximum call stack size exceeded" error on Safari 18.2. I believe this is caused by this WebKit bug.

There is a test page that demonstrates the bug here.

The problem seems to occur with an Emscripten Asyncify build with higher compiler optimization levels. One possible workaround is to build wa-sqlite with -O0 or -O1 (instead of -Oz) but that produces a 3x larger .wasm file that runs noticeably slower.

The test page also fails on the Safari 18.3 beta but not on Safari Technology Preview.

[quolpr]

Might be related: #87

[rhashimoto]

Not related. That one was an actual stack overflow caused by a problematic SQL statement with 100+ nested subqueries.