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-rw-r--r--erts/emulator/test/num_bif_SUITE.erl99
1 files changed, 75 insertions, 24 deletions
diff --git a/erts/emulator/test/num_bif_SUITE.erl b/erts/emulator/test/num_bif_SUITE.erl
index 90b6a36262..d0840fe731 100644
--- a/erts/emulator/test/num_bif_SUITE.erl
+++ b/erts/emulator/test/num_bif_SUITE.erl
@@ -1,8 +1,8 @@
%%
%% %CopyrightBegin%
-%%
+%%
%% Copyright Ericsson AB 1997-2014. All Rights Reserved.
-%%
+%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
@@ -14,7 +14,7 @@
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
-%%
+%%
%% %CopyrightEnd%
%%
@@ -36,22 +36,22 @@
%% integer_to_binary/2
%% binary_to_integer/1
--export([all/0, suite/0, groups/0, init_per_suite/1, end_per_suite/1,
+-export([all/0, suite/0, groups/0, init_per_suite/1, end_per_suite/1,
init_per_group/2, end_per_group/2, t_abs/1, t_float/1,
t_float_to_string/1, t_integer_to_string/1,
- t_string_to_integer/1,
+ t_string_to_integer/1, t_list_to_integer_edge_cases/1,
t_string_to_float_safe/1, t_string_to_float_risky/1,
t_round/1, t_trunc/1
]).
suite() -> [{ct_hooks,[ts_install_cth]}].
-all() ->
+all() ->
[t_abs, t_float, t_float_to_string, t_integer_to_string,
{group, t_string_to_float}, t_string_to_integer, t_round,
- t_trunc].
+ t_trunc, t_list_to_integer_edge_cases].
-groups() ->
+groups() ->
[{t_string_to_float, [],
[t_string_to_float_safe, t_string_to_float_risky]}].
@@ -73,7 +73,7 @@ t_abs(Config) when is_list(Config) ->
5.5 = abs(id(5.5)),
0.0 = abs(id(0.0)),
100.0 = abs(id(-100.0)),
-
+
%% Integers.
5 = abs(id(5)),
0 = abs(id(0)),
@@ -93,7 +93,7 @@ t_abs(Config) when is_list(Config) ->
BigNum = abs(BigNum),
BigNum = abs(-BigNum),
ok.
-
+
t_float(Config) when is_list(Config) ->
0.0 = float(id(0)),
2.5 = float(id(2.5)),
@@ -109,7 +109,7 @@ t_float(Config) when is_list(Config) ->
%% Extremly big bignums.
Big = id(list_to_integer(id(lists:duplicate(2000, $1)))),
{'EXIT', {badarg, _}} = (catch float(Big)),
-
+
ok.
@@ -183,7 +183,7 @@ t_float_to_string(Config) when is_list(Config) ->
test_fts("1.2300000000e+20",1.23e20, [{scientific, 10}, compact]),
test_fts("1.23000000000000000000e+20",1.23e20, []),
ok.
-
+
test_fts(Expect, Float) ->
Expect = float_to_list(Float),
BinExpect = list_to_binary(Expect),
@@ -255,7 +255,7 @@ t_round(Config) when is_list(Config) ->
256 = round(id(255.6)),
-1033 = round(id(-1033.3)),
-1034 = round(id(-1033.6)),
-
+
% OTP-3722:
X = id((1 bsl 27) - 1),
MX = -X,
@@ -345,9 +345,9 @@ t_integer_to_string(Config) when is_list(Config) ->
%% Invalid types
lists:foreach(fun(Value) ->
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:integer_to_binary(Value)),
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:integer_to_list(Value))
end,[atom,1.2,0.0,[$1,[$2]]]),
@@ -416,27 +416,27 @@ t_string_to_integer(Config) when is_list(Config) ->
%% Invalid types
lists:foreach(fun(Value) ->
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch binary_to_integer(Value)),
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:list_to_integer(Value))
end,[atom,1.2,0.0,[$1,[$2]]]),
-
+
% Default base error cases
lists:foreach(fun(Value) ->
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:binary_to_integer(
list_to_binary(Value))),
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:list_to_integer(Value))
end,["1.0"," 1"," -1","","+"]),
-
+
% Custom base error cases
lists:foreach(fun({Value,Base}) ->
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch binary_to_integer(
list_to_binary(Value),Base)),
- {'EXIT', {badarg, _}} =
+ {'EXIT', {badarg, _}} =
(catch erlang:list_to_integer(Value,Base))
end,[{" 1",1},{" 1",37},{"2",2},{"C",11},
{"1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111z",16},
@@ -449,10 +449,61 @@ t_string_to_integer(Config) when is_list(Config) ->
ok.
+%% Tests edge cases for list_to_integer; compares with known good values
+
+t_list_to_integer_edge_cases(Config) when is_list(Config) ->
+ %% Take integer literals and compare to their representation in ExtTerm
+ T = [
+ {16, "0", <<131,97,0>>},
+ {16, "-0", <<131,97,0>>},
+
+ {16, "f", <<131,97,15>>},
+ {16, "-f", <<131,98,255,255,255,241>>},
+
+ {16, "0000000000000000000000000000000000000000000000000f",
+ <<131,97,15>>},
+ {16, "-0000000000000000000000000000000000000000000000000f",
+ <<131,98,255,255,255,241>>},
+
+ {16, "ffffffff", <<131,110,4,0,255,255,255,255>>},
+ {16, "-ffffffff", <<131,110,4,1,255,255,255,255>>},
+
+ {16, "7fffffff", <<131,110,4,0,255,255,255,127>>},
+ {16, "-7fffffff", <<131,98,128,0,0,1>>},
+
+ {16, "ffffffffffffffff",
+ <<131,110,8,0,255,255,255,255,255,255,255,255>>},
+ {16, "-ffffffffffffffff",
+ <<131,110,8,1,255,255,255,255,255,255,255,255>>},
+
+ {16, "7fffffffffffffff",
+ <<131,110,8,0,255,255,255,255,255,255,255,127>>},
+ {16, "-7fffffffffffffff",
+ <<131,110,8,1,255,255,255,255,255,255,255,127>>},
+
+ %% Alleged 32-bit corner case (should not happen on 64-bit). At 32-4
+ %% bits we may corrupt sign bit and fall out of SMALL_INT range.
+ {2, "1000000000000000000000000000", <<131,98,8,0,0,0>>},
+ {2, "-1000000000000000000000000000", <<131,98,248,0,0,0>>},
+
+ %% 64-bit corner case (should not happen on 32-bit) at 64-4 bits we
+ %% corrupt sign bit and fall out of SMALL_INT range (bam! all dead)
+ {2, "100000000000000000000000000000000000000000000000000000000000",
+ <<131,110,8,0,0,0,0,0,0,0,0,8>>},
+ {2, "-100000000000000000000000000000000000000000000000000000000000",
+ <<131,110,8,1,0,0,0,0,0,0,0,8>>}
+ ],
+ [begin
+ io:format("~s base ~p vs ~p~n", [Str, Base, Bin]),
+ FromStr = list_to_integer(Str, Base),
+ FromStr = binary_to_term(Bin)
+ end || {Base, Str, Bin} <- T],
+ ok.
+
test_sti(Num) ->
[begin
io:format("Testing ~p:~p",[Num,Base]),
- test_sti(Num,Base)
+ test_sti(Num,Base)
end|| Base <- lists:seq(2,36)].
test_sti(Num,Base) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 18:09:56 +0000