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%% -*- erlang-indent-level: 2 -*-
%%-------------------------------------------------------------------------
%% The guard in f/3 revealed a problem in the translation of the 'bs_add'
%% BEAM instruction to Icode. The fail label was not properly translated.
%% Fixed 3/2/2011. Then in 2015 we found another issue: g/2. Also fixed.
%%-------------------------------------------------------------------------
-module(bs_add).
-export([test/0]).
test() ->
42 = f(<<12345:16>>, 4711, <<42>>),
true = g(<<1:13>>, 3), %% was handled OK, but
false = g(<<>>, gurka), %% this one leaked badarith
ok.
f(Bin, A, B) when <<A:9, B:7/binary>> == Bin ->
gazonk;
f(Bin, _, _) when is_binary(Bin) ->
42.
%% Complex way of testing (bit_size(Bin) + Len) rem 8 =:= 0
g(Bin, Len) when is_binary(<<Bin/binary-unit:1, 123:Len>>) ->
true;
g(_, _) ->
false.
|
