diff options
Diffstat (limited to 'lib/stdlib/test/binary_module_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/binary_module_SUITE.erl | 52 |
1 files changed, 32 insertions, 20 deletions
diff --git a/lib/stdlib/test/binary_module_SUITE.erl b/lib/stdlib/test/binary_module_SUITE.erl index c5cfea5e9e..be8ab3b98e 100644 --- a/lib/stdlib/test/binary_module_SUITE.erl +++ b/lib/stdlib/test/binary_module_SUITE.erl @@ -22,7 +22,8 @@ -export([all/0, suite/0, interesting/1,scope_return/1,random_ref_comp/1,random_ref_sr_comp/1, random_ref_fla_comp/1,parts/1, bin_to_list/1, list_to_bin/1, - copy/1, referenced/1,guard/1,encode_decode/1,badargs/1,longest_common_trap/1]). + copy/1, referenced/1,guard/1,encode_decode/1,badargs/1,longest_common_trap/1, + check_no_invalid_read_bug/1]). -export([random_number/1, make_unaligned/1]). @@ -36,7 +37,7 @@ all() -> [scope_return,interesting, random_ref_fla_comp, random_ref_sr_comp, random_ref_comp, parts, bin_to_list, list_to_bin, copy, referenced, guard, encode_decode, badargs, - longest_common_trap]. + longest_common_trap, check_no_invalid_read_bug]. -define(MASK_ERROR(EXPR),mask_error((catch (EXPR)))). @@ -715,22 +716,22 @@ referenced(Config) when is_list(Config) -> badarg = ?MASK_ERROR(binary:referenced_byte_size(apa)), badarg = ?MASK_ERROR(binary:referenced_byte_size({})), badarg = ?MASK_ERROR(binary:referenced_byte_size(1)), - A = <<1,2,3>>, - B = binary:copy(A,1000), - 3 = binary:referenced_byte_size(A), - 3000 = binary:referenced_byte_size(B), - <<_:8,C:2/binary>> = A, - 3 = binary:referenced_byte_size(C), - 2 = binary:referenced_byte_size(binary:copy(C)), - <<_:7,D:2/binary,_:1>> = A, - 2 = binary:referenced_byte_size(binary:copy(D)), - 3 = binary:referenced_byte_size(D), - <<_:8,E:2/binary,_/binary>> = B, - 3000 = binary:referenced_byte_size(E), - 2 = binary:referenced_byte_size(binary:copy(E)), - <<_:7,F:2/binary,_:1,_/binary>> = B, - 2 = binary:referenced_byte_size(binary:copy(F)), - 3000 = binary:referenced_byte_size(F), + A = <<0:(1024 * 8)>>, + B = binary:copy(A, 1000), + 1024 = binary:referenced_byte_size(A), + 1024000 = binary:referenced_byte_size(B), + <<_:8,C:1023/binary>> = A, + 1024 = binary:referenced_byte_size(C), + 1023 = binary:referenced_byte_size(binary:copy(C)), + <<_:7,D:1023/binary,_:1>> = A, + 1023 = binary:referenced_byte_size(binary:copy(D)), + 1024 = binary:referenced_byte_size(D), + <<_:8,E:128/binary,_/binary>> = B, + 1024000 = binary:referenced_byte_size(E), + 128 = binary:referenced_byte_size(binary:copy(E)), + <<_:7,F:128/binary,_:1,_/binary>> = B, + 128 = binary:referenced_byte_size(binary:copy(F)), + 1024000 = binary:referenced_byte_size(F), ok. @@ -754,8 +755,9 @@ list_to_bin(Config) when is_list(Config) -> copy(Config) when is_list(Config) -> <<1,2,3>> = binary:copy(<<1,2,3>>), RS = random_string({1,10000}), - RS = RS2 = binary:copy(RS), - false = erts_debug:same(RS,RS2), + RS2 = binary:copy(RS), + true = RS =:= RS2, + false = erts_debug:same(RS, RS2), <<>> = ?MASK_ERROR(binary:copy(<<1,2,3>>,0)), badarg = ?MASK_ERROR(binary:copy(<<1,2,3:3>>,2)), badarg = ?MASK_ERROR(binary:copy([],0)), @@ -1361,3 +1363,13 @@ make_unaligned2(Bin0) when is_binary(Bin0) -> Bin. id(I) -> I. + +check_no_invalid_read_bug(Config) when is_list(Config) -> + check_no_invalid_read_bug(24); +check_no_invalid_read_bug(60) -> + ok; +check_no_invalid_read_bug(I) -> + N = 1 bsl I, + binary:encode_unsigned(N+N), + binary:encode_unsigned(N+N, little), + check_no_invalid_read_bug(I+1). |