WebAssembly support for threads is... fraught at every level.

Fixes #459.

Change-Id: I4f9f501a56cad93887e94b7aeba4d7fae18df6c2
Reviewed-on: https://code-review.googlesource.com/c/re2/+/62230
Reviewed-by: Alex Chernyakhovsky <achernya@google.com>
Reviewed-by: Paul Wankadia <junyer@google.com>
1 file changed