How to Fix a Native Crash That Shows No Managed Stack Trace

A native crash often prints something like #00 pc 0001a2b4 libgame.so and nothing else. That is not an error message, it is an address inside a stripped binary. To read it you need the unstripped symbols for the precise build that crashed, archived at build time.

How to read it

1. Archive symbols at build time

For every release build, save the unstripped binary or symbol file (.sym, .dSYM, .pdb, or the libil2cpp.so with symbols) keyed by build version. You cannot symbolicate after the fact without them.

2. Capture the raw backtrace

Get the crash log with the module name and offset for each frame (Android tombstone, macOS crash report, or your engine's crash handler output). The hex offsets are what you resolve, not the runtime addresses.

3. Resolve addresses to lines

Run addr2line -e libgame.so 0x1a2b4 on Android/Linux, atos -o Game.dSYM -l <load> <addr> on Apple, or load the .pdb in WinDbg. This turns each offset into a file and line in your code.

4. Match the symbol version exactly

Symbols from a different build will resolve to the wrong lines and send you chasing ghosts. Verify the build ID or UUID in the crash matches the archived symbol file before trusting any line number.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.