Twiggy dominators depth 1 doesn't add up to the whole file size

[alexcrichton]

Using this wasm file you get:

$ twiggy dominators -d 1 foo.wasm
 Retained Bytes │ Retained % │ Dominator Tree
────────────────┼────────────┼────────────────────────────────────────
          84355 ┊     39.68% ┊ export "format"
          16045 ┊      7.55% ┊ "function names" subsection
          10997 ┊      5.17% ┊ table[0]
           3465 ┊      1.63% ┊ func[18]
           1836 ┊      0.86% ┊ func[86]
           1199 ┊      0.56% ┊ func[26]
           1059 ┊      0.50% ┊ func[104]
            965 ┊      0.45% ┊ func[2]
            710 ┊      0.33% ┊ func[96]
            340 ┊      0.16% ┊ func[149]
            327 ┊      0.15% ┊ func[150]
            261 ┊      0.12% ┊ func[158]
            140 ┊      0.07% ┊ func[52]
            140 ┊      0.07% ┊ func[74]
            138 ┊      0.06% ┊ func[155]
            137 ┊      0.06% ┊ func[50]
            125 ┊      0.06% ┊ func[92]
            117 ┊      0.06% ┊ func[119]
            106 ┊      0.05% ┊ func[14]
             87 ┊      0.04% ┊ func[108]
             75 ┊      0.04% ┊ func[146]
             70 ┊      0.03% ┊ func[201]
             63 ┊      0.03% ┊ export "__wbindgen_malloc"
             56 ┊      0.03% ┊ func[199]
             53 ┊      0.02% ┊ func[93]
             42 ┊      0.02% ┊ export "__wbindgen_global_argument_ptr"
             34 ┊      0.02% ┊ export "__wbindgen_free"
             28 ┊      0.01% ┊ export "__indirect_function_table"
             22 ┊      0.01% ┊ export "__heap_base"
             21 ┊      0.01% ┊ export "__data_end"
             12 ┊      0.01% ┊ func[87]
             11 ┊      0.01% ┊ export "memory"
              8 ┊      0.00% ┊ type[10]
              8 ┊      0.00% ┊ global[0]
              7 ┊      0.00% ┊ type[4]
              7 ┊      0.00% ┊ type[11]
              6 ┊      0.00% ┊ type[3]
              6 ┊      0.00% ┊ type[7]
              5 ┊      0.00% ┊ type[5]
              5 ┊      0.00% ┊ type[8]
              5 ┊      0.00% ┊ type[14]
              4 ┊      0.00% ┊ type[0]
              4 ┊      0.00% ┊ type[1]
              3 ┊      0.00% ┊ type[6]

The file itself is 212k bytes, but the numbers on the left don't seem to add up to that. Is some data left out by accident perhaps?

[fitzgen]

This is most likely "garbage" that we can't figure out how it is referenced from any function. We should add some sort of total unreachable stuff row to this output.

[data-pup]

Working on this now, pardon the delay! Took care of text output today, should be able to fix the csv and json output & put a PR for this up shortly!