CircleCI の Android Docker Image でJDKが11にアップデートされた件のまとめ - nashcft's blog
私は今回の件より前から CircleCI を使っておらず、最近は主に GitHub Actions でCIを構築していてこの件で被害は被っていないのだけど、軽く調べてみたところ Android project を JDK 9+ でビルドすることに強い興味をを持っている自分には結構興味深いことがわかったのでもう少し詳細に調べてまとめることにした。 何があったの 日本時間で 2020-08-18 のお話 CircleCI の Android Docker Image が更新され、JDK 8 ベースから JDK 11 ベースになった*1 これらの image を使ってCIを行っている Android project でビルドが失敗するものが発生した Twitter が少し賑やかになった 原因1: なぜビルドが失敗するようになったの この blog を書き始めてから調べて知った付け焼き刃な部分もあ
Java とか Android (DEX) の MUTF-8 (Modified UTF-8) って何者よ？っていう話 - bearmini's blog
Android の APK の DEX をゴニョゴニョしてたら、DEX の string 領域に格納されている文字列は実は UTF-8 じゃなくてちょっと modify された MUTF-8 (Modified UTF-8) だということが判明して軽くショックを受けています。 Wikipedia の UTF-8 の項によりますと、標準の UTF-8 から以下の 2 つの変更点があるようです。 null 文字 (U+0000) を 0x00 という 1 バイトにエンコードしないで 0xC0, 0x80 というバイト列にエンコードする（UTF-8 のルールに則って 0xC0, 0x80 をデコードすると U+0000 に戻る。shortest possible representation に違反している） U+10000 〜 U+10FFF のコードポイント -- UTF-16 だとサロゲー
R8 Optimization: Class Reflection and Forced Inlining - Jake Wharton
Note: This post is part of a series on D8 and R8, Android’s new dexer and optimizer, respectively. For an intro to D8 read “Android’s Java 8 support”. For an intro to R8 read “R8 Optimization: Staticization”. The previous post on R8 covered method outlining which automatically de-duplicated code. This was actually a detour from what I had promised was next at the end of the class constant operatio
The Economics of Generated Code - Jake Wharton
Among the many things that I’ve stolen learned from Jesse Wilson is the phrase “the economics of generated code”. This captures the idea that the things we value when generating code are different than those we value for code that’s manually written. A code generator is only written once but the code it generates occurs many times. Thus, any investment into making the generator emit more efficient
R8 Optimization: Null Data Flow Analysis (Part 1) - Jake Wharton
Note: This post is part of a series on D8 and R8, Android’s new dexer and optimizer, respectively. For an intro to D8 read “Android’s Java 8 support”. For an intro to R8 read “R8 Optimization: Staticization”. The last post in this series was the first to cover R8 and one of its optimizations. This post will cover an optimization which performs data flow analysis of nullability. Let’s dig in! A coa
R8 Optimization: Staticization - Jake Wharton
Note: This post is part of a series on D8 and R8, Android’s new dexer and optimizer, respectively. For an intro to D8 read “Android’s Java 8 support”. This post introduces R8. The first three posts (1, 2, 3) in this series explored D8. Among its core responsibility of converting Java bytecode to Dalvik bytecode, it desugars new Java language features and works around vendor- and version-specific b
Android's Java 9, 10, 11, and 12 Support - Jake Wharton
Note: This post is part of a series on D8 and R8, Android’s new dexer and optimizer, respectively. For an intro to D8 read “Android’s Java 8 support”. The first post in this series explored Android’s Java 8 support. Having support for the language features and APIs of Java 8 is table stakes at this point. We’re not quite there with the APIs yet, sadly, but D8 has us covered with the language featu
Android's Java 8 Support - Jake Wharton
I’ve worked from home for a few years, and during that time I’ve heard people around the office complaining about Android’s varying support for different versions of Java. Every year at Google I/O you could find me asking about it at the fireside chats or directly to the folks responsible. At conferences and other developer events it comes up in conversation or in talks with different degrees of a
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Unit test fails on JDK17 — what is the problem?
fluidsynth-midi-service-j/docs/design/fluidsynthjna.md at main · atsushieno/fluidsynth-midi-service-j
Tick Tock: Desugaring and Timezones
R8 Optimization: Lambda Groups - Jake Wharton
Google Issue Tracker
What you need to know about Java 8 method references
Why service locator is so unpopular
Avoiding Vendor- and Version-Specific VM Bugs - Jake Wharton
ログイン - Google アカウント
Java 8 Language Features in Android Apps - Bazel
Bazel 0.15 - Bazel
The Ably Blog