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| author | Kjell Winblad <[email protected]> | 2019-02-14 15:32:06 +0100 |
|---|---|---|
| committer | GitHub <[email protected]> | 2019-02-14 15:32:06 +0100 |
| commit | acf97f8bcb4846bdc5935770b22ce1cb84a90a15 (patch) | |
| tree | 579a2f1e8754130aaa59c636ce2e4335a73d0746 /lib/stdlib | |
| parent | f45efdd2663b8050edb4351a8d1d57d437fb6e51 (diff) | |
| parent | 1df3d85824601e3c07d12ca9811866c2ef334e76 (diff) | |
| download | otp-acf97f8bcb4846bdc5935770b22ce1cb84a90a15.tar.gz otp-acf97f8bcb4846bdc5935770b22ce1cb84a90a15.tar.bz2 otp-acf97f8bcb4846bdc5935770b22ce1cb84a90a15.zip | |
Merge pull request #2118 from kjellwinblad/fix_valgrind_problem_bignum OTP-15583
Fix bug in binary:encode_unsigned causing a read of uninitialized memory
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/test/binary_module_SUITE.erl | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/stdlib/test/binary_module_SUITE.erl b/lib/stdlib/test/binary_module_SUITE.erl index c5cfea5e9e..e0811f19cf 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)))). @@ -1361,3 +1362,13 @@ 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). |