Android libc.so crash?

Question

I\'m using AndEngine with the PhysicsBox2DExtension to make a game. My game keeps crashing and I get this in the unfiltered LogCat:

07-06 13:25:27.266: I/DEB         


        

Answer 1

You should use addr2line tool as described here and lookup these two addresses in your library to find what causes the crash:

#02  pc 00026558  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
#03  pc 00013e7c  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so

So under Windows you should:

1. Copy the library from device:

   adb pull /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so C:\
   

2. Run addr2line tool for it using command line:

   cd %PATH_TO_YOUR_NDK%\toolchains\arm-linux-androideabi-4.4.3\prebuilt\linux-x86\bin
   arm-linux-androideabi-addr2line -C -f -e C:\libandenginephysicsbox2dextension.so
   

3. Enter adress by adress:

   00026558 [ENTER]
   > here will be function name and line
   00013e7c [ENTER]
   > and again
   

Note: running this tool under Windows may give you less information than under Linux, so you may choose to install the distro as a virtual machine and follow instructions from the link to original answer above.

Update

Another (easier?) way is to use ndk-stack:

1. As previously
2. Save your dump into file. Let's call it 'dump.txt'.

3. Run ndk-stack:

   cd %PATH_TO_YOUR_NDK%
   ndk-stack -sym C:\libandenginephysicsbox2dextension.so -dump C:\dump.txt