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0 pointstoyg10y ago0 comments

I'm not sure I follow -- this is what comes up from a random commercial project (I don't believe it's a debug build): http://i.imgur.com/OhdNC5A.png

What part would you refer to as "method variable name"?

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JosephRedfern10y ago

That's weird. By "method variable names" I mean local variables, i.e. those declared inside a method.

I'm not getting the same results as you with a little sample program I wrote - see: https://gist.github.com/JosephRedfern/662131ceb2119abf3e83. Field names and method names are preserved (which make sense), but local variable names are lost (which also makes sense to me!)

Are you sure that your example code doesn't include debug information?

toygOP10y ago

You're looking at the bytecode. If you want full decompilation, use one of the tools mentioned here: http://stackoverflow.com/questions/272535/how-do-i-decompile...

JosephRedfern10y ago

I decompiled the dex file, but not the Java Class file.

I suppose this is diverging a little from the original comment (which was in the context of an Android application), but surely if running `strings` on the class file found the method, class and field names then it would also find the local variable name too, if it was there.

If I specifically compile the java file with `javac -g:vars DecompilationTest.java` then the local variable name IS included in the file. It is not by default.

j / k navigate · click thread line to collapse

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JosephRedfern10y ago

That's weird. By "method variable names" I mean local variables, i.e. those declared inside a method.

Are you sure that your example code doesn't include debug information?

toygOP10y ago

You're looking at the bytecode. If you want full decompilation, use one of the tools mentioned here: http://stackoverflow.com/questions/272535/how-do-i-decompile...

JosephRedfern10y ago

I decompiled the dex file, but not the Java Class file.

If I specifically compile the java file with `javac -g:vars DecompilationTest.java` then the local variable name IS included in the file. It is not by default.

j / k navigate · click thread line to collapse