ffi-napi-issue-nodejs-v14

Reproducing an error loading multiple packages which use ffi-napi v3.0.1, and perhaps other versions.

Behavior differs between versions of Node.js.

• v10.22.0: no crash.
• v12.18.3: no crash.
• v14.9.0: crash.

See

• node-ffi-napi/node-ffi-napi#96

Using Node.js v14.9.0

• Requiring ffi-napi in one package, then in another package crashes node with a core dump.
  • The crash seems to occur in ref-napi in the the second package, even though ref-napi is not directly referenced.
  • Requiring ffi-napi twice in the same package does not make a difference.
  • Requiring ref-napi directly in the two packages does not make a difference.
• Note that both packages are separate directories on disk.
  • This setup produces more than one node_modules directory.
  • The issue was discovered when developing interreferenced, not-yet-released packages.
  • Has not been tested with published packages.
• Referencing package-02 as a package does not make a difference.
  • Using a dependency to file://../package-02/ in package-01 crashes.
  • Directly loading require("../package-02/") crashes too.
• A workaround is to use npm link.
  • Linking to either the ffi-napi package or the ref-napi package fixes the issue.
  • The file location on disk might matter, if "physically" different files are loaded.

Steps to verify

cd ./package-02/
npm install
cd ..

cd ./package-01/
npm install

node index.js

Sample output

First package. Step A.
First package. Step B.
Second package. Step A.


#
# Fatal error in , line 0
# Check failed: result.second.
#
#
#
#FailureMessage Object: 0x7ffd9985c4d0
 1: 0xa6f5f1  [node]
 2: 0x19cb8c4 V8_Fatal(char const*, ...) [node]
 3: 0xe58379 v8::internal::GlobalBackingStoreRegistry::Register(std::shared_ptr<v8::internal::BackingStore>) [node]
 4: 0xba38a8 v8::ArrayBuffer::GetBackingStore() [node]
 5: 0x9c1290 napi_get_typedarray_info [node]
 6: 0x7f3c5003a46a  [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/node_modules/ref-napi/prebuilds/linux-x64/node.napi.node]
 7: 0x7f3c5003ad2d  [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/node_modules/ref-napi/prebuilds/linux-x64/node.napi.node]
 8: 0x7f3c50024de7 FFI::WrapPointerImpl(Napi::Env, char*, unsigned long) [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/build/Release/ffi_bindings.node]
 9: 0x7f3c50026b05 FFI::FFI::InitializeBindings(Napi::Env, Napi::Object) [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/build/Release/ffi_bindings.node]
10: 0x7f3c5002781b FFI::InitializeBindings(Napi::CallbackInfo const&) [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/build/Release/ffi_bindings.node]
11: 0x7f3c5002865b Napi::details::CallbackData<Napi::Value (*)(Napi::CallbackInfo const&), Napi::Value>::Wrapper(napi_env__*, napi_callback_info__*) [/some/project/ref-napi-issue-nodejs-v14/package-02/node_modules/ffi-napi/build/Release/ffi_bindings.node]
12: 0x9b8a5f  [node]
13: 0xbe254b  [node]
14: 0xbe3af6  [node]
15: 0xbe4176 v8::internal::Builtin_HandleApiCall(int, unsigned long*, v8::internal::Isolate*) [node]
16: 0x13fe0b9  [node]
[1]    314475 illegal hardware instruction (core dumped)  node index.js

Workaround

• Run the steps above to verify that the code crashes.
• Download the source code for one of:
  • ffi-napi
  • ref-napi.

cd ref-napi # or ffi-napi
npm install
npm link

cd ffi-napi-issue-nodejs-v14

cd package-02
npm link ref-napi # or ffi-napi
cd ..

cd package-01
npm link ref-napi # or ffi-napi

node index.js

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ffi-napi-issue-nodejs-v14 Copyright © 2020 Joel Purra. Released under MIT License. Your donations are appreciated!