[erlang-questions] How to track down intermittent segfaults in a threaded NIF

[Tristan Sloughter]

If you need cerl this is true. But if you just need `-emu_type debug`
then if you do `rebar3 local install` and follow the instructions to
update your $PATH you can do:
REBAR3_ERL_ARGS="-emu_type debug" rebar3 shell


On Tue, May 29, 2018, at 7:57 AM, Fred Hebert wrote:
> 
> On Tue, May 29, 2018 at 7:30 AM, Igor Clark
> <igor.clark@REDACTED> wrote:>> 
>> - How should I specify that rebar3 should run "cerl" instead of
>>   "erl" ?> 
> You can't, especially if you're using 'rebar3 shell', where all we can
> do is boot a shell within an escript. Do try to debug from a release.
> You can probably do something like> 
> cerl -boot _build/prod/rel/<relname>/release/<version>/<relname> -
> config _build/prod/rel/<relname>/release/<version>/sys> 
> or if possible:
> 
> _build/prod/rel/<relname>/erts-<vsn>/bin/erl -boot
> _build/prod/rel/release/<version>/<relname> -config
> _build/prod/rel/release/<version>/sys  -emu_type debug> 
> These two commands will ignore the contents of your vm.args but they
> let you call the underlying mechanism to boot the VM with the
> arguments you need without the nodetool wrappers that relx ships.> _________________________________________________
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