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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
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.
-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.