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author | Björn Gustavsson <[email protected]> | 2018-10-24 12:52:58 +0200 |
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committer | GitHub <[email protected]> | 2018-10-24 12:52:58 +0200 |
commit | 8d34db5c230660f42bd146b6db23096c015c221d (patch) | |
tree | b9491f9c4e723f0ba1fe40e664cfa37f8e99550e /lib/observer/test | |
parent | 885ec15333e55e0c2d450d41d9a39cd73f257384 (diff) | |
parent | e3a31aa4b06659762d94e487a4a3d2918fe91096 (diff) | |
download | otp-8d34db5c230660f42bd146b6db23096c015c221d.tar.gz otp-8d34db5c230660f42bd146b6db23096c015c221d.tar.bz2 otp-8d34db5c230660f42bd146b6db23096c015c221d.zip |
Merge pull request #1996 from bjorng/bjorn/observer/fix-crashdump_viewer/ERL-722/OTP-15365
Eliminate crash in crashdump_viewer reading some literal maps
Diffstat (limited to 'lib/observer/test')
-rw-r--r-- | lib/observer/test/crashdump_helper.erl | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/observer/test/crashdump_helper.erl b/lib/observer/test/crashdump_helper.erl index 145ff56b71..d8f4e046ae 100644 --- a/lib/observer/test/crashdump_helper.erl +++ b/lib/observer/test/crashdump_helper.erl @@ -142,4 +142,23 @@ create_maps() -> Map3 = lists:foldl(fun(I, A) -> A#{I=>I*I} end, Map2, lists:seq(-10, 0)), - #{a=>Map0,b=>Map1,c=>Map2,d=>Map3,e=>#{}}. + #{a=>Map0,b=>Map1,c=>Map2,d=>Map3,e=>#{},literal=>literal_map()}. + +literal_map() -> + %% A literal map such as the one below will produce a heap dump + %% like this: + %% + %% Address1:t4:H<Address3>,H<Address4>,H<Address5>,H<Address6> + %% Address2:Mf4:H<Adress1>:I1,I2,I3,I4 + %% Address3: ... % "one" + %% Address4: ... % "two" + %% Address5: ... % "three" + %% Address6: ... % "four" + %% + %% The map cannot be reconstructed in a single sequential pass. + %% + %% To reconstruct the map, first the string keys "one" + %% through "four" must be reconstructed, then the tuple at + %% Adress1, then the map at Address2. + + #{"one"=>1,"two"=>2,"three"=>3,"four"=>4}. |