diff options
Diffstat (limited to 'lib/hipe/test/bs_SUITE_data/bs_construct.erl')
| -rw-r--r-- | lib/hipe/test/bs_SUITE_data/bs_construct.erl | 177 |
1 files changed, 177 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 9cc9ac848c..b9e7d93570 100644 --- a/lib/hipe/test/bs_SUITE_data/bs_construct.erl +++ b/lib/hipe/test/bs_SUITE_data/bs_construct.erl @@ -13,6 +13,12 @@ test() -> ok = bs5(), 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 = bad_floats(), + ok = huge_binaries(), ok. %%-------------------------------------------------------------------- @@ -126,3 +132,174 @@ bad_ones() -> Bin123 = <<1,2,3>>, ?FAIL(<<Bin123/float>>), ok. + +%%-------------------------------------------------------------------- +%% Taken from the emulator bs_construct_SUITE - seg faulted till 18.1 + +zero_width() -> + Z = id(0), + Small = id(42), + Big = id(1 bsl 128), % puts stuff on the heap + <<>> = <<Small:Z>>, + <<>> = <<Small:0>>, + <<>> = <<Big:Z>>, + <<>> = <<Big:0>>, + 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. + +%%-------------------------------------------------------------------- + +bad_floats() -> + WordSize = erlang:system_info(wordsize), + BitsPerWord = WordSize * 8, + {'EXIT',{badarg,_}} = (catch <<3.14:(id(33))/float>>), + {'EXIT',{badarg,_}} = (catch <<3.14:(id(64 bor 32))/float>>), + {'EXIT',{badarg,_}} = (catch <<3.14:(id((1 bsl 28) bor 32))/float>>), + {'EXIT',{system_limit,_}} = (catch <<3.14:(id(1 bsl BitsPerWord))/float>>), + ok. + +%%-------------------------------------------------------------------- +%% A bug in the implementation of binaries compared sizes in bits with sizes in +%% bytes, causing <<0:(id((1 bsl 31)-1))>> to fail to construct with +%% 'system_limit'. +%% <<0:(id((1 bsl 32)-1))>> was succeeding because the comparison was +%% (incorrectly) signed. + +huge_binaries() -> + AlmostIllegal = id(<<0:(id((1 bsl 32)-8))>>), + case erlang:system_info(wordsize) of + 4 -> huge_binaries_32(AlmostIllegal); + 8 -> ok + end, + garbage_collect(), + id(<<0:(id((1 bsl 31)-1))>>), + id(<<0:(id((1 bsl 30)-1))>>), + garbage_collect(), + ok. + +huge_binaries_32(AlmostIllegal) -> + %% Attempt construction of too large binary using bs_init/1 (which takes the + %% number of bytes as an argument, which should be compared to the maximum + %% size in bytes). + {'EXIT',{system_limit,_}} = (catch <<0:32,AlmostIllegal/binary>>), + %% Attempt construction of too large binary using bs_init/1 with a size in + %% bytes that has the msb set (and would be negative if it was signed). + {'EXIT',{system_limit,_}} = + (catch <<0:8, AlmostIllegal/binary, AlmostIllegal/binary, + AlmostIllegal/binary, AlmostIllegal/binary, + AlmostIllegal/binary, AlmostIllegal/binary, + AlmostIllegal/binary, AlmostIllegal/binary>>), + ok. |