Compiler bug??

Anders Nygren <>
Tue Jul 4 18:04:10 CEST 2006


Hi
I recently gave an Erlang course and one of my students found
the following.
I would have expected a compiler error in this case. But as You
can see it compiles and runs with a somewhat unexpected result.
A similar error is a case statement gives a compiler error.

-module(if_bug).

-export([foo/1]).

foo(X) ->
    if
	X > 1 ->
	    ok;       % <- Note semicolon here
	    not_ok;
	true ->
	    true
    end.


Erlang (BEAM) emulator version 5.5 [source] [async-threads:0] [hipe]

12> c(if_bug).
{ok,if_bug}
13> if_bug:foo(2).
ok
14>


/Anders



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