diff options
Diffstat (limited to 'lib/compiler/test/bs_match_SUITE.erl')
| -rw-r--r-- | lib/compiler/test/bs_match_SUITE.erl | 79 |
1 files changed, 67 insertions, 12 deletions
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl index 86c8cb23f5..d63d2235d7 100644 --- a/lib/compiler/test/bs_match_SUITE.erl +++ b/lib/compiler/test/bs_match_SUITE.erl @@ -33,7 +33,7 @@ matching_meets_construction/1,simon/1,matching_and_andalso/1, otp_7188/1,otp_7233/1,otp_7240/1,otp_7498/1, match_string/1,zero_width/1,bad_size/1,haystack/1, - cover_beam_bool/1]). + cover_beam_bool/1,matched_out_size/1,follow_fail_branch/1]). -export([coverage_id/1,coverage_external_ignore/2]). @@ -44,19 +44,21 @@ suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> test_lib:recompile(?MODULE), - [fun_shadow, int_float, otp_5269, null_fields, wiger, - bin_tail, save_restore, shadowed_size_var, - partitioned_bs_match, function_clause, unit, - shared_sub_bins, bin_and_float, dec_subidentifiers, - skip_optional_tag, wfbm, degenerated_match, bs_sum, - coverage, multiple_uses, zero_label, followed_by_catch, - matching_meets_construction, simon, - matching_and_andalso, otp_7188, otp_7233, otp_7240, - otp_7498, match_string, zero_width, bad_size, haystack, - cover_beam_bool]. + [{group,p}]. groups() -> - []. + [{p,test_lib:parallel(), + [fun_shadow,int_float,otp_5269,null_fields,wiger, + bin_tail,save_restore,shadowed_size_var, + partitioned_bs_match,function_clause,unit, + shared_sub_bins,bin_and_float,dec_subidentifiers, + skip_optional_tag,wfbm,degenerated_match,bs_sum, + coverage,multiple_uses,zero_label,followed_by_catch, + matching_meets_construction,simon, + matching_and_andalso,otp_7188,otp_7233,otp_7240, + otp_7498,match_string,zero_width,bad_size,haystack, + cover_beam_bool,matched_out_size,follow_fail_branch]}]. + init_per_suite(Config) -> Config. @@ -1079,6 +1081,59 @@ do_cover_beam_bool(Bin, X) when X > 0 -> do_cover_beam_bool(<<_,Bin/binary>>, X) -> do_cover_beam_bool(Bin, X+1). +matched_out_size(Config) when is_list(Config) -> + {253,16#DEADBEEF} = mos_int(<<8,253,16#DEADBEEF:32>>), + {6,16#BEEFDEAD} = mos_int(<<3,6:3,16#BEEFDEAD:32>>), + {53,16#CAFEDEADBEEFCAFE} = mos_int(<<16,53:16,16#CAFEDEADBEEFCAFE:64>>), + {23,16#CAFEDEADBEEFCAFE} = mos_int(<<5,23:5,16#CAFEDEADBEEFCAFE:64>>), + + {<<1,2,3>>,4} = mos_bin(<<3,1,2,3,4,3>>), + {<<1,2,3,7>>,19,42} = mos_bin(<<4,1,2,3,7,19,4,42>>), + <<1,2,3,7>> = mos_bin(<<4,1,2,3,7,"abcdefghij">>), + + ok. + +mos_int(<<L,I:L,X:32>>) -> + {I,X}; +mos_int(<<L,I:L,X:64>>) -> + {I,X}. + +mos_bin(<<L,Bin:L/binary,X:8,L>>) -> + L = byte_size(Bin), + {Bin,X}; +mos_bin(<<L,Bin:L/binary,X:8,L,Y:8>>) -> + L = byte_size(Bin), + {Bin,X,Y}; +mos_bin(<<L,Bin:L/binary,"abcdefghij">>) -> + L = byte_size(Bin), + Bin. + +follow_fail_branch(_) -> + 42 = ffb_1(<<0,1>>, <<0>>), + 8 = ffb_1(<<0,1>>, [a]), + 42 = ffb_2(<<0,1>>, <<0>>, 17), + 8 = ffb_2(<<0,1>>, [a], 0), + ok. + +ffb_1(<<_,T/bitstring>>, List) -> + case List of + <<_>> -> + 42; + [_|_] -> + %% The fail branch of the bs_start_match2 instruction + %% pointing to here would be ignored, making the compiler + %% incorrectly assume that the delayed sub-binary + %% optimization was safe. + bit_size(T) + end. + +ffb_2(<<_,T/bitstring>>, List, A) -> + case List of + <<_>> when A =:= 17 -> 42; + [_|_] -> bit_size(T) + end. + + check(F, R) -> R = F(). |