Stuck on an issue?

We’re hoping to use BLAKE3 for content hashing due to its awesome speed. The server is in Meteor and we’re getting an error that appears to be very low level.

Reproduction:

# install meteor
# I wrote this reproduction using 1.9, but I believe my colleague has tried
# beta versions.
nvm use 12
meteor create --react simple-todos-2
cd simple-todos-2
meteor npm install blake3
meteor
^C
# apologies for being old school. ed isn't usable, but it is scriptable!
ed server/main.js
%p
/function
-1
i
var blake3 = require('blake3');
.
%p
wq
meteor
# observe crash:
W20200303-14:22:16.239(-5)? (STDERR)
W20200303-14:22:16.288(-5)? (STDERR)
W20200303-14:22:16.288(-5)? (STDERR) #
W20200303-14:22:16.288(-5)? (STDERR) # Fatal error in , line 0
W20200303-14:22:16.289(-5)? (STDERR) # archived threads in combination with wasm not supported
W20200303-14:22:16.289(-5)? (STDERR) #
W20200303-14:22:16.289(-5)? (STDERR) #
W20200303-14:22:16.290(-5)? (STDERR) #
W20200303-14:22:16.290(-5)? (STDERR) #FailureMessage Object: 0x102e79240

This issuse seems to be related: https://github.com/nodejs/node/issues/29767 .

It suggests --no-wasm-code-gc, but that is already in use:

ps aux | grep no-wasm-code-gc
sk               23007  21.5  3.4 17398548 281708 s011  S+    2:27PM   0:15.17 /Users/sk/.meteor/packages/meteor-tool/.1.9.0.z44zal++os.osx.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.osx.x86_64/dev_bundle/bin/node --max-old-space-size=4096 --no-wasm-code-gc /Users/sk/.meteor/packages/meteor-tool/.1.9.0.z44zal++os.osx.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.osx.x86_64/tools/index.js

The error message appears to come from here: https://chromium.googlesource.com/v8/v8/+/master/src/wasm/wasm-engine.cc#106

which contains this comment:

Archived threads are rarely used, and not combined with Wasm at the moment. Implement this and test it properly once we have a use case for that.