[erlang-questions] how can I debug errors in linked-in drivers or nif loaded as shared library?

[caox]

thanks a lot. I will try it.
在 2010-12-24，下午9:59， Kevin A. Smith 写道：

> I've edited the erl script which comes with the standard Erlang release to allow easy use of GDB for just such situations:
> 
> if [ ! -z "$USE_GDB" ]; then
> gdb $BINDIR/erlexec --args $BINDIR/erlexec ${1+"$@"}
> else
> exec $BINDIR/erlexec ${1+"$@"}
> fi
> 
> #exec $BINDIR/erlexec ${1+"$@"}
> 
> Define the env var "USE_GDB" before launching Erlang and you'll get a debugger prompt when your NIF/driver crashes. GDB's backtrace command is especially helpful :-)
> 
> Credit to Dave Smith @ Basho for originally suggesting this approach.
> 
> --Kevin
> 
> On Dec 24, 2010, at 4:09 AM, caox wrote:
> 
>> hi
>> 
>> 	I got a segmentation fault and a core.dump file when tested my linked-in driver. How could I debug it with gdb?
>> 	For an executable c file, we can just call 'gdb a.out core.dump'. How can I do this for a .so file loaded by erlang?
>>       Thanks.
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>