diff options
Diffstat (limited to 'erts/emulator/test/bs_match_int_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/bs_match_int_SUITE.erl | 71 |
1 files changed, 43 insertions, 28 deletions
diff --git a/erts/emulator/test/bs_match_int_SUITE.erl b/erts/emulator/test/bs_match_int_SUITE.erl index e913dc98b0..454e55d017 100644 --- a/erts/emulator/test/bs_match_int_SUITE.erl +++ b/erts/emulator/test/bs_match_int_SUITE.erl @@ -234,34 +234,49 @@ mml_choose(<<_A:8>>) -> single_byte_binary; mml_choose(<<_A:8,_T/binary>>) -> multi_byte_binary. match_huge_int(Config) when is_list(Config) -> - Sz = 1 bsl 27, - Bin = <<0:Sz,13:8>>, - skip_huge_int_1(Sz, Bin), - 0 = match_huge_int_1(Sz, Bin), - - %% Test overflowing the size of an integer field. - nomatch = overflow_huge_int_skip_32(Bin), - case erlang:system_info(wordsize) of - 4 -> - nomatch = overflow_huge_int_32(Bin); - 8 -> - %% An attempt will be made to allocate heap space for - %% the bignum (which will probably fail); only if the - %% allocation succeeds will the matching fail because - %% the binary is too small. - ok - end, - nomatch = overflow_huge_int_skip_64(Bin), - nomatch = overflow_huge_int_64(Bin), - - %% Test overflowing the size of an integer field using variables as sizes. - Sizes = case erlang:system_info(wordsize) of - 4 -> lists:seq(25, 32); - 8 -> [] - end ++ lists:seq(50, 64), - ok = overflow_huge_int_unit128(Bin, Sizes), - - ok. + case ?MODULE of + bs_match_int_no_opt_SUITE -> + %% This test case is written with the assumption that + %% bs_skip2 instructions are used when the value of the + %% extracted segment will not be used. In OTP 21 and earlier, that + %% assumption was always true, because the bs_skip optimization + %% was included in v3_codegen and could not be disabled. + %% In OTP 22, the bs_skip optimization is done by beam_ssa_opt + %% and is disabled. + %% + %% On memory-constrained computers, using bs_get_integer2 + %% instructions may cause the runtime system to terminate + %% because of insufficient memory. + {skip, "unoptimized code would use too much memory"}; + bs_match_int_SUITE -> + Sz = 1 bsl 27, + Bin = <<0:Sz,13:8>>, + skip_huge_int_1(Sz, Bin), + 0 = match_huge_int_1(Sz, Bin), + + %% Test overflowing the size of an integer field. + nomatch = overflow_huge_int_skip_32(Bin), + case erlang:system_info(wordsize) of + 4 -> + nomatch = overflow_huge_int_32(Bin); + 8 -> + %% An attempt will be made to allocate heap space for + %% the bignum (which will probably fail); only if the + %% allocation succeeds will the matching fail because + %% the binary is too small. + ok + end, + nomatch = overflow_huge_int_skip_64(Bin), + nomatch = overflow_huge_int_64(Bin), + + %% Test overflowing the size of an integer field using + %% variables as sizes. + Sizes = case erlang:system_info(wordsize) of + 4 -> lists:seq(25, 32); + 8 -> [] + end ++ lists:seq(50, 64), + ok = overflow_huge_int_unit128(Bin, Sizes) + end. overflow_huge_int_unit128(Bin, [Sz0|Sizes]) -> Sz = id(1 bsl Sz0), |