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authorHans Bolinder <[email protected]>2018-01-19 12:44:28 +0100
committerHans Bolinder <[email protected]>2018-01-19 12:44:28 +0100
commit69de63049417cf7e047f035b5e086caad9dc7932 (patch)
tree78f5f24ab67a9a3b16d5ee86c0e9a9c04d806e9a /lib
parent919b6ddc24e409ec78380af14511ad50a88b4525 (diff)
parentcecf41457d92a3bd21a7690b589f79c0a2901a93 (diff)
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Merge branch 'hasse/dialyzer/fix_bsl' into maint
* hasse/dialyzer/fix_bsl: dialyzer: Fix bsl/2 bug
Diffstat (limited to 'lib')
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/bsL.erl13
-rw-r--r--lib/hipe/cerl/erl_bif_types.erl3
-rw-r--r--lib/hipe/cerl/erl_types.erl4
3 files changed, 19 insertions, 1 deletions
diff --git a/lib/dialyzer/test/small_SUITE_data/src/bsL.erl b/lib/dialyzer/test/small_SUITE_data/src/bsL.erl
new file mode 100644
index 0000000000..b2fdc16324
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/bsL.erl
@@ -0,0 +1,13 @@
+-module(bsL).
+
+-export([t/0]).
+
+%% Found in lib/observer/test/crashdump_helper.erl.
+
+t() ->
+ Size = 60,
+ <<H:16/unit:8>> = erlang:md5(<<Size:32>>),
+ true = H < 20,
+ true = H > 2,
+ Data = ((H bsl (8*150)) div (H+7919)),
+ <<Data:Size/unit:8>>.
diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl
index 2e56d25694..518f67ee1b 100644
--- a/lib/hipe/cerl/erl_bif_types.erl
+++ b/lib/hipe/cerl/erl_bif_types.erl
@@ -1903,7 +1903,8 @@ infinity_div(Number1, Number2) when is_integer(Number1), is_integer(Number2) ->
infinity_bsl(pos_inf, _) -> pos_inf;
infinity_bsl(neg_inf, _) -> neg_inf;
-infinity_bsl(Number, pos_inf) when is_integer(Number), Number >= 0 -> pos_inf;
+infinity_bsl(0, pos_inf) -> 0;
+infinity_bsl(Number, pos_inf) when is_integer(Number), Number > 0 -> pos_inf;
infinity_bsl(Number, pos_inf) when is_integer(Number) -> neg_inf;
infinity_bsl(Number, neg_inf) when is_integer(Number), Number >= 0 -> 0;
infinity_bsl(Number, neg_inf) when is_integer(Number) -> -1;
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index 4e0f93212d..2b290b2f23 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -2351,6 +2351,8 @@ t_from_range(X, Y) ->
-else.
+t_from_range(pos_inf, pos_inf) -> ?integer_pos;
+t_from_range(neg_inf, neg_inf) -> ?integer_neg;
t_from_range(neg_inf, pos_inf) -> t_integer();
t_from_range(neg_inf, Y) when is_integer(Y), Y < 0 -> ?integer_neg;
t_from_range(neg_inf, Y) when is_integer(Y), Y >= 0 -> t_integer();
@@ -2383,6 +2385,8 @@ t_from_range(pos_inf, neg_inf) -> t_none().
-spec t_from_range_unsafe(rng_elem(), rng_elem()) -> erl_type().
+t_from_range_unsafe(pos_inf, pos_inf) -> ?integer_pos;
+t_from_range_unsafe(neg_inf, neg_inf) -> ?integer_neg;
t_from_range_unsafe(neg_inf, pos_inf) -> t_integer();
t_from_range_unsafe(neg_inf, Y) -> ?int_range(neg_inf, Y);
t_from_range_unsafe(X, pos_inf) -> ?int_range(X, pos_inf);