[trishume]

Did you compile with debug info (-g I think)? It needs to read the DWARF info to get the line numbers.

[thepumpkin1979]

I think so:

  $ dmd -g main.d && ./main
  Segmentation fault: 11

is there anything else I can try?

I'm OSX El Capitan 10.11.1

[lultimouomo]

On Unix segfaults by default don't generate stack traces. This makes it work on linux, don't know about OSX (put it in your main module):

  import etc.linux.memoryerror;
  
  shared static this() {
   	static if (is(typeof(registerMemoryErrorHandler)))
   		registerMemoryErrorHandler();
  }

[thepumpkin1979]

The handler works in a real ubuntu VM but not in docker (the image is probably missing glibc https://github.com/D-Programming-Language/druntime/blob/mast... so that explains "static if" in your snippet)

to be honest, it's better than nothing but still kinda difficult to work with:

  etc.linux.memoryerror.NullPointerError@src/etc/linux/memoryerror.d(325)
  ----------------
  ??:? void etc.linux.memoryerror.sigsegvUserspaceProcess(void*) [0x439045]
  ??:? void etc.linux.memoryerror.sigsegvDataHandler() [0x438f92]
  ??:? _Dmain [0x435c17]
  ??:? _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv [0x4376da]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x437630]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).runAll() [0x437696]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x437630]
  ??:? _d_run_main [0x43758d]
  ??:? main [0x436075]
  ??:? __libc_start_main [0xb0fa1ec4]

[destructionator]

Are you using the new version and compiling with -g there? Those addresses should be translateable into line numbers.

You can also do it manually btw with `addr2line -e your_executable 0x435c17` and the sort.

[thepumpkin1979]

Thanks, I tried again and it seems to be working:

  $ dmd -g main.d && ./main
  etc.linux.memoryerror.NullPointerError@src/etc/linux/memoryerror.d(325)
  ----------------
  ??:? void etc.linux.memoryerror.sigsegvUserspaceProcess(void*) [0x423321]
  ??:? void etc.linux.memoryerror.sigsegvDataHandler() [0x42326e]
  main.d:12 _Dmain [0x4204e5]
  ??:? _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv [0x421b8a]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x421ae0]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).runAll() [0x421b46]
  ??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x421ae0]
  ??:? _d_run_main [0x421a3d]
  ??:? main [0x420597]
  ??:? __libc_start_main [0xdb825ec4]

this is linux, I use mac as development machine, what can I do for mac? is there a error handler for mac too?