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# error-prone 2.31.0+ blocked on https://github.com/grpc/grpc-java/issues/10152
# It breaks Bazel (ArrayIndexOutOfBoundsException in turbine) and Dexing ("D8:
# java.lang.NullPointerException"). We can trivially upgrade the Bazel CI to
# 6.3.0+ (https://github.com/bazelbuild/bazel/issues/18743).

According to https://issuetracker.google.com/issues/342522142#comment8 (Jun 6, 2024):

This was fixed in D8/R8 compilers a little more than a year ago. The issue tracking this on D8/R8 is b/281536562, but that is an internal bug.
The fix landed in 8.3.3-dev, and was part of AGP 8.3. It was backported to 8.1.44 and 8.0.46 for AGP 8.1 and 8.0.
It was not backported to D8/R8 4.0 for AGP 7.4. However, you should be able to use D8/R8 8.0.44 or 8.1.44 with AGP 7.4 if needed. To use a specific D8/R8 version merge the following into settings.gradle or settings.gradle.kts:

pluginManagement {
    buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.1.44")
        }
    }
}

@shivaspeaks PTAL

We're trying to get a release made (v1.74.0). Once it is made, we'll look at bumping the dependency versions.

We should look at getting this in, as it also fixes the errorprone-annotations problem. We should double-check whether the D8 NPE also is triggered for our users as well, as then we can point them to the workaround in case they are impacted. (Although that's not strictly necessary.)

(FYI: nobody should need to wait for us to upgrade dependencies like Guava. Newer versions of dependencies should generally be fine. We only discourage downgrading dependencies.)

I confirmed that the NPE error propagates to our examples, so it is necessary to update them. We'll need to notify users in our release notes.

Thank you so much!

You are welcome.