[erlang-questions] Trace erlang BIFs with dbg
Mon Sep 12 10:20:50 CEST 2016
It is not possible to trace on what is called "guard bifs", i.e. functions
in the erlang module that can be used in guards. For a full list of which
those function are see:
On Fri, Sep 9, 2016 at 11:56 PM, nato <> wrote:
> Are BIFs such as `length/1` part of the erlang module, or do BIFs live
> somewhere else then get masqueraded ...
> I am trying to trace functions like these with dbg, and nothing is yielded.
> For example, I am trying the following with no success...
> 1> dbg:tracer(), dbg:p(all, c).
> 2> dbg:tpl(erlang, length, x).
> 3> erlang:length(  ). %% or simply `length().`
> Or, are my above dbg flags leaving the erlang module out... or... confused.
> erlang-questions mailing list
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the erlang-questions