Compose Multiplatform 1.11.0 wired ProGuard 7.7.0 into the release
build for the first time. With optimize + shrink + obfuscate all on,
the desktop v1.09.1 DMG hit four distinct runtime failures:
A. Jackson's SerializationFeature.values()/valueOf() stripped, so
Class.getEnumConstants() returned null and ObjectMapper failed
to initialise (app didn't launch). Fixed in #2921.
B. fr.acinq.secp256k1.* JNI bridge classes renamed by obfuscate;
bundled libsecp256k1-jni.dylib could not FindClass the original
names, so KeyPair / sign / verify crashed on first use.
C. androidx.sqlite-bundled native declarations (nativeThreadSafeMode,
nativeOpen) shrunk away because no Kotlin caller referenced them
directly; libsqliteJni.dylib raised NoSuchMethodError on the first
EventStore query.
D. ProGuard's method/specialization/returntype optimize sub-pass
generated a synthetic okio bridge (Okio__OkioKt.buffer$<hash>)
whose declared return type was RealBufferedSource but whose body
returned the BufferedSource super-interface. The JVM verifier
rejected the bridge, killing every OkHttp connection.
The Android (mobile) module solved the same class of problems in
amethyst/proguard-rules.pro with a single global strategy:
-dontobfuscate
-keepnames class ** { *; }
-keep enum ** { *; }
+ per-library -keep rules for JNA / libsodium / libscrypt
+ first-party -keep com.vitorpamplona.**
This commit replays that strategy in desktopApp/compose-rules.pro
and drops the previous optimize.set(false)/obfuscate.set(false)
escape hatch in desktopApp/build.gradle.kts. Shrink and optimize
both stay on; only the one optimize sub-pass that produced invalid
okio bytecode (method/specialization/returntype) is disabled.
Additional desktop-only keep rules (Jackson, full JNA, VLCj,
SLF4J, OkHttp / Conscrypt / BouncyCastle / OpenJSSE / Graal
dontwarns) stay in place. Two libraries shipped only on desktop
also get explicit -keep rules so their native callbacks survive
shrink:
- androidx.sqlite.** + native <methods>; (nativeThreadSafeMode
was previously stripped even with -keepnames, because shrink
removes members the global rule doesn't cover).
- pt.davidafsilva.apple.** + native <methods>; for the macOS
Keychain JNI bridge.
Verified on macOS arm64 packageReleaseDmg:
- javap on the post-ProGuard jars confirms:
* fr.acinq.secp256k1.NativeSecp256k1 keeps its FQCN.
* SerializationFeature.values() / valueOf() present.
* androidx.sqlite.driver.bundled.BundledSQLiteDriverKt
retains native nativeThreadSafeMode() + nativeOpen().
* Okio__OkioKt only exposes buffer(Source): BufferedSource
and buffer(Sink): BufferedSink — no specialized
buffer$<hash> bridge.
- Bundled app launches and reaches VLC MediaPlayerFactory init
with zero VerifyError / NoSuchMethodError / UnsatisfiedLinkError
in the log.
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