"dyld[xxx]: missing symbol called" - netty-resolver-dns-native-macos 4.1.103.Final is buggy

[NilsRenaud]

Version

4.5.1

Context

My application built on Vert.x wasn't able to start with this cryptic error message: dyld[xxx]: missing symbol called.
This happened only with Vert.x 4.5.1 and never with Vert.x 4.5.0

Steps to reproduce

• Run on MacOs
• Have netty-resolver-dns-native-macos in your POM
• Have this in your POM to manage Vert.x versions:

<dependency>
        <groupId>io.vertx</groupId>
        <artifactId>vertx-stack-depchain</artifactId>
        <version>4.5.1</version>
        <scope>import</scope>
        <type>pom</type>
      </dependency>

And boom.

Mitigation

Since netty-resolver-dns-native-macos is buggy in 4.1.103.Final only, then you'll have to put this BEFORE the vertx-stack-depchain dependency:

<dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-bom</artifactId>
        <version>4.1.102.Final</version>
        <scope>import</scope>
        <type>pom</type>
</dependency>

How to fix this

Upgrade Netty's version to a non buggy one. The issue is tracked down in Netty's issues: netty/netty#13728