ad5cd31498
* Add shrinker-test examples with never-referenced constructors R8 can do some optimizations that assume values of types whose constructors are never referenced are `null`. (A bit confused why the rules here are sufficient to avoid that optimization in the case of a class whose sole constructor has arguments and is unreferenced, since the keep rule only refers to `<init>()` instead of `<init>(...)`. Does R8 have special behavior for `<init>()` where attempting to keep that makes it assume a class is constructable even if it doesn't have a no-args constructor?) Also rename some test classes/names to refer to `NoArgs` instead of `Default` constructors. The examples here care about whether a no-argument constructor is present. While a no-argument constructor (explicitly defined or not) is used by default in some circumstances, the Java documentation consistently uses "default constructor" to refer only to constructors whose implementation is implicitly provided by the complier (all default constructors are no-argument constructors, but not vice versa). * Update shrinker-test/src/main/java/com/example/ClassWithNoArgsConstructor.java Accept review suggestion Co-authored-by: Marcono1234 <Marcono1234@users.noreply.github.com> * Update shrinker-test/src/main/java/com/example/NoSerializedNameMain.java Accept review suggestion Co-authored-by: Marcono1234 <Marcono1234@users.noreply.github.com> * Further adjust test class/method names for consistency * Update shrinker-test/src/main/java/com/example/NoSerializedNameMain.java Co-authored-by: Marcono1234 <Marcono1234@users.noreply.github.com> --------- Co-authored-by: Marcono1234 <Marcono1234@users.noreply.github.com>
25 lines
1.3 KiB
Prolog
25 lines
1.3 KiB
Prolog
# Include common rules
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-include common.pro
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### The following rules are needed for R8 in "full mode", which performs more aggressive optimizations than ProGuard
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### See https://r8.googlesource.com/r8/+/refs/heads/main/compatibility-faq.md#r8-full-mode
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# For classes with generic type parameter R8 in "full mode" requires to have a keep rule to
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# preserve the generic signature
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-keep,allowshrinking,allowoptimization,allowobfuscation,allowaccessmodification class com.example.GenericClasses$GenericClass
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-keep,allowshrinking,allowoptimization,allowobfuscation,allowaccessmodification class com.example.GenericClasses$GenericUsingGenericClass
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# Don't obfuscate class name, to check it in exception message
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-keep,allowshrinking,allowoptimization class com.example.NoSerializedNameMain$TestClassNoArgsConstructor
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-keep,allowshrinking,allowoptimization class com.example.NoSerializedNameMain$TestClassHasArgsConstructor
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# This rule has the side-effect that R8 still removes the no-args constructor, but does not make the class abstract
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-keep class com.example.NoSerializedNameMain$TestClassNotAbstract {
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@com.google.gson.annotations.SerializedName <fields>;
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}
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# Keep enum constants which are not explicitly used in code
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-keepclassmembers class com.example.EnumClass {
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** SECOND;
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}
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