exception crash
lazarus / 43-Android

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BeniBela · 2021-12-19 21:02

So my app crashes because an exceptinon on aarch64, but the exception
is caught. Like this

Code: [Select]  try
    raise Exception.Create('abc');
  except
    on e: Exception do ;
  end;

crashes. How can that happen?


Code: [Select]12-19 21:47:29.056  4023  4023 F libc    : Fatal signal
11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x30 in tid 4023
(ibela.videlibri), pid 4023 (ibela.videlibri)
12-19 21:47:29.162  4108  4108 I crash_dump64: obtaining output fd
from tombstoned, type: kDebuggerdTombstone
12-19 21:47:29.164   748   748 I /system/bin/tombstoned: received
crash request for pid 4023
12-19 21:47:29.168  4108  4108 I crash_dump64: performing dump of
process 4023 (target tid = 4023)
12-19 21:47:29.184  4108  4108 F DEBUG   : *** *** *** *** *** *** ***
*** *** *** *** *** *** *** *** ***
12-19 21:47:29.184  4108  4108 F DEBUG   : Build fingerprint: 'Nokia/C
ore2_00WW/CO2N_sprout:10/QP1A.190711.020/00WW_4_200:user/release-keys'
12-19 21:47:29.184  4108  4108 F DEBUG   : Revision: '0'
12-19 21:47:29.184  4108  4108 F DEBUG   : ABI: 'arm64'
12-19 21:47:29.194  4108  4108 F DEBUG   : Timestamp: 2021-12-19
21:47:29+0100
12-19 21:47:29.195  4108  4108 F DEBUG   : pid: 4023, tid: 4023, name:
ibela.videlibri  >>> de.benibela.videlibri <<<
12-19 21:47:29.195  4108  4108 F DEBUG   : uid: 10202
12-19 21:47:29.195  4108  4108 F DEBUG   : signal 11 (SIGSEGV), code 1
(SEGV_MAPERR), fault addr 0x30
12-19 21:47:29.195  4108  4108 F DEBUG   : Cause: null pointer
dereference
12-19 21:47:29.195  4108  4108 F DEBUG   :     x0  0000000000000028 
x1  d7b1d20d532eb138  x2  0000007cf57dced0  x3  0000007fd39677e0
12-19 21:47:29.195  4108  4108 F DEBUG   :     x4  0000007fd39684e0 
x5  0000007cf6ddc096  x6  00000000ffffffff  x7  0000000000000000
12-19 21:47:29.195  4108  4108 F DEBUG   :     x8  0000007de396f128 
x9  0000000000000001  x10 0000000000000001  x11 0000007d5dd56448
12-19 21:47:29.195  4108  4108 F DEBUG   :     x12 0000007d5dd5649c 
x13 0000007d5dd564f0  x14 0000007d5dd56550  x15 0000000000000000
12-19 21:47:29.195  4108  4108 F DEBUG   :     x16 0000007cf5a20610 
x17 0000007de2693b58  x18 0000007de40de000  x19 0000007fd3967ad8
12-19 21:47:29.195  4108  4108 F DEBUG   :     x20 0000007fd3967ae0 
x21 0000000000000028  x22 0000007ddeeff210  x23 0000007d5560cc80
12-19 21:47:29.195  4108  4108 F DEBUG   :     x24 0000000000000004 
x25 0000007de396f020  x26 0000007de37b4cb0  x27 0000000000000001
12-19 21:47:29.195  4108  4108 F DEBUG   :     x28 0000000000000000 
x29 0000007fd3967ac0
12-19 21:47:29.195  4108  4108 F DEBUG   :     sp  0000007fd3967aa0 
lr  0000007cf57d1f24  pc  0000007cf57c38dc
12-19 21:47:29.195  4108  4108 F DEBUG   :
12-19 21:47:29.195  4108  4108 F DEBUG   : backtrace:
12-19 21:47:29.195  4108  4108 F DEBUG   :       #00 pc
00000000000828dc  /data/app/de.benibela.videlibri-
E_LkJHh8RFSqM7IKlFmL7g==/lib/arm64/liblclapp.so (BuildId:
61c2af45dcb2e9ed6844810546a35357a5d8390e)

It does not happen with every installation. But on the installation
where it happens, it happens every time.