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authorKostis Sagonas <[email protected]>2015-11-27 17:08:02 +0100
committerMagnus Lång <[email protected]>2015-11-27 18:18:38 +0100
commit57b192d8ad6c319b20da48e55485799168f4d346 (patch)
tree910fb94b46fdde4cb556930a165c6b76a684b0f8 /lib
parent01442bb8d4d1f62f8a4f95d5b89bda725bf1423d (diff)
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Add some more binary syntax construction tests
Some more cases (taken from the BEAM bs_construct suite) that used to show different behaviour than BEAM when compiled to native code were included in the appropriate test file of the HiPE test suite.
Diffstat (limited to 'lib')
-rw-r--r--lib/hipe/test/bs_SUITE_data/bs_construct.erl115
1 files changed, 115 insertions, 0 deletions
diff --git a/lib/hipe/test/bs_SUITE_data/bs_construct.erl b/lib/hipe/test/bs_SUITE_data/bs_construct.erl
index 37a54c1981..7d59482662 100644
--- a/lib/hipe/test/bs_SUITE_data/bs_construct.erl
+++ b/lib/hipe/test/bs_SUITE_data/bs_construct.erl
@@ -14,6 +14,9 @@ test() ->
16#10000008 = bit_size(large_bin(1, 2, 3, 4)),
ok = bad_ones(),
ok = zero_width(),
+ ok = not_used(),
+ ok = bad_append(),
+ ok = system_limit(),
ok.
%%--------------------------------------------------------------------
@@ -142,3 +145,115 @@ zero_width() ->
ok.
id(X) -> X.
+
+%%--------------------------------------------------------------------
+%% Taken from bs_construct_SUITE. The test checks that constructed
+%% binaries that are not used would still give a `badarg' exception.
+%% Problem was that in native code one of them gave `badarith'.
+
+not_used() ->
+ ok = not_used1(3, <<"dum">>),
+ {'EXIT',{badarg,_}} = (catch not_used1(42, "dum_string")),
+ {'EXIT',{badarg,_}} = (catch not_used2(666, -2)),
+ {'EXIT',{badarg,_}} = (catch not_used2(666, "bad_size")), % this one
+ {'EXIT',{badarg,_}} = (catch not_used3(666)),
+ ok.
+
+not_used1(I, BinString) ->
+ <<I:32,BinString/binary>>,
+ ok.
+
+not_used2(I, Sz) ->
+ <<I:Sz>>,
+ ok.
+
+not_used3(I) ->
+ <<I:(-8)>>,
+ ok.
+
+%%--------------------------------------------------------------------
+%% Taken from bs_construct_SUITE.
+
+bad_append() ->
+ do_bad_append(<<127:1>>, fun append_unit_3/1),
+ do_bad_append(<<127:2>>, fun append_unit_3/1),
+ do_bad_append(<<127:17>>, fun append_unit_3/1),
+
+ do_bad_append(<<127:3>>, fun append_unit_4/1),
+ do_bad_append(<<127:5>>, fun append_unit_4/1),
+ do_bad_append(<<127:7>>, fun append_unit_4/1),
+ do_bad_append(<<127:199>>, fun append_unit_4/1),
+
+ do_bad_append(<<127:7>>, fun append_unit_8/1),
+ do_bad_append(<<127:9>>, fun append_unit_8/1),
+
+ do_bad_append(<<0:8>>, fun append_unit_16/1),
+ do_bad_append(<<0:15>>, fun append_unit_16/1),
+ do_bad_append(<<0:17>>, fun append_unit_16/1),
+ ok.
+
+do_bad_append(Bin0, Appender) ->
+ {'EXIT',{badarg,_}} = (catch Appender(Bin0)),
+
+ Bin1 = id(<<0:3,Bin0/bitstring>>),
+ <<_:3,Bin2/bitstring>> = Bin1,
+ {'EXIT',{badarg,_}} = (catch Appender(Bin2)),
+
+ %% Create a writable binary.
+ Empty = id(<<>>),
+ Bin3 = <<Empty/bitstring,Bin0/bitstring>>,
+ {'EXIT',{badarg,_}} = (catch Appender(Bin3)),
+ ok.
+
+append_unit_3(Bin) ->
+ <<Bin/binary-unit:3,0:1>>.
+
+append_unit_4(Bin) ->
+ <<Bin/binary-unit:4,0:1>>.
+
+append_unit_8(Bin) ->
+ <<Bin/binary,0:1>>.
+
+append_unit_16(Bin) ->
+ <<Bin/binary-unit:16,0:1>>.
+
+%%--------------------------------------------------------------------
+%% Taken from bs_construct_SUITE.
+
+system_limit() ->
+ WordSize = erlang:system_info(wordsize),
+ BitsPerWord = WordSize * 8,
+ {'EXIT',{system_limit,_}} =
+ (catch <<0:(id(0)),42:(id(1 bsl BitsPerWord))>>),
+ {'EXIT',{system_limit,_}} =
+ (catch <<42:(id(1 bsl BitsPerWord)),0:(id(0))>>),
+ {'EXIT',{system_limit,_}} =
+ (catch <<(id(<<>>))/binary,0:(id(1 bsl 100))>>),
+
+ %% Would fail to load.
+ {'EXIT',{system_limit,_}} = (catch <<0:(1 bsl 67)>>),
+ {'EXIT',{system_limit,_}} = (catch <<0:((1 bsl 64)+1)>>),
+ case WordSize of
+ 4 ->
+ system_limit_32();
+ 8 ->
+ ok
+ end.
+
+system_limit_32() ->
+ {'EXIT',{badarg,_}} = (catch <<42:(-1)>>),
+ {'EXIT',{badarg,_}} = (catch <<42:(id(-1))>>),
+ {'EXIT',{badarg,_}} = (catch <<42:(id(-389739873536870912))/unit:8>>),
+ {'EXIT',{system_limit,_}} = (catch <<42:536870912/unit:8>>),
+ {'EXIT',{system_limit,_}} = (catch <<42:(id(536870912))/unit:8>>),
+ {'EXIT',{system_limit,_}} = (catch <<0:(id(8)),42:536870912/unit:8>>),
+ {'EXIT',{system_limit,_}} = (catch <<0:(id(8)),42:(id(536870912))/unit:8>>),
+
+ %% The size would be silently truncated, resulting in a crash.
+ {'EXIT',{system_limit,_}} = (catch <<0:(1 bsl 35)>>),
+ {'EXIT',{system_limit,_}} = (catch <<0:((1 bsl 32)+1)>>),
+
+ %% Would fail to load.
+ {'EXIT',{system_limit,_}} = (catch <<0:(1 bsl 43)>>),
+ {'EXIT',{system_limit,_}} = (catch <<0:((1 bsl 40)+1)>>),
+ ok.