occur crash

[xalexchen]

1.when i hook a method which inside has try-catch blocked,when catch blocked raise will lead app directly crash.
2. if inside call back method beforeHookMethod we create a exception object (new Exception()) also will cause app directly crash.it's any way to avoid or fixed it ?

[hwjump]

plz refer https://github.com/alibaba/dexposed/blob/master/dexposed/src/main/java/com/taobao/android/dexposed/DexposedBridge.java#L222
and
https://github.com/alibaba/dexposed/blob/master/dexposed/src/main/java/com/taobao/android/dexposed/DexposedBridge.java#L256
when before and after method occur exception，it should be catched!

and if the orignal method crash，it only try catch InvocationTargetException，（https://github.com/alibaba/dexposed/blob/master/dexposed/src/main/java/com/taobao/android/dexposed/DexposedBridge.java#L243）， so you should try catch your exception in your orignal method.

[xalexchen]

what i means is if the target method has try-catch blocked. will directly crash VM

example :

protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
String a = null;
try {
a.toString();
} catch (Exception e) {
e.printStackTrace();
}
Log.i("dexposed", "before");
}
as you can see,we already try-catch null point exception.but when VM try to fillStackTrace will lead VM directly crashed. make sense and any help ?
and the Crash log like this :

backtrace:
12-22 14:32:55.134 I/DEBUG ( 424): #00 pc 002324ee /system/lib/libart.so (art::CountStackDepthVisitor::VisitFrame()+297)
12-22 14:32:55.134 I/DEBUG ( 424): #1 pc 0022da3d /system/lib/libart.so (art::StackVisitor::WalkStack(bool)+272)
12-22 14:32:55.135 I/DEBUG ( 424): #2 pc 002388d9 /system/lib/libart.so (_jobject* art::Thread::CreateInternalStackTrace(art::ScopedObjectAccessAlreadyRunnable const&) const+76)

[hwjump]

Could you tell me your phone type，and the android verison？

[xalexchen]

nexus 5 . android 5.0