protocolbuffers / protocolbuffers/protocolbuffers.github.io
Encoding: Inconsistent example for packed repeated fields in Test4 message
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Desde el 17/10/2025.
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Descripción
In the documentation section about packed repeated fields, the following example is given:
message Test4 {
string d = 4;
repeated int32 e = 6;
}
The text says:
“… and we construct a Test4 message with d set to "hello", and e set to 1, 2, and 3, this could be encoded as 3206038e029ea705, or written out as Protoscope,
4: {"hello"}
6: {3 270 86942}”
Problem:
The encoding 3206038e029ea705 corresponds to e = [3, 270, 86942], not [1, 2, 3].
If e = [1, 2, 3], the correct encoding should be:
32 03 01 02 03
which expands to:
32 → field 6, wire type = length-delimited
03 → length = 3 bytes
01 02 03 → values [1, 2, 3]
The given encoding 3206038e029ea705 decodes as:
32 → field 6, wire type = length-delimited
06 → length = 6 bytes
03 → value = 3
8e 02 → value = 270
9e a7 05 → value = 86942
So the example text and the provided encoding are inconsistent.
Suggested fix:
Update the documentation so that either:
The example values match the provided encoding (e = [3, 270, 86942]), or
The encoded hex string is corrected to match the described values (e = [1, 2, 3]).
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