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Diffstat (limited to 'src/encoding/json/v2_stream.go')
| -rw-r--r-- | src/encoding/json/v2_stream.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/encoding/json/v2_stream.go b/src/encoding/json/v2_stream.go index ccbef6077b..28e72c0a52 100644 --- a/src/encoding/json/v2_stream.go +++ b/src/encoding/json/v2_stream.go @@ -8,6 +8,7 @@ package json import ( "bytes" + "errors" "io" "encoding/json/jsontext" @@ -193,6 +194,16 @@ func (d Delim) String() string { func (dec *Decoder) Token() (Token, error) { tok, err := dec.dec.ReadToken() if err != nil { + // Historically, v1 would report just [io.EOF] if + // the stream is a prefix of a valid JSON value. + // It reports an unwrapped [io.ErrUnexpectedEOF] if + // truncated within a JSON token such as a literal, number, or string. + if errors.Is(err, io.ErrUnexpectedEOF) { + if len(bytes.Trim(dec.dec.UnreadBuffer(), " \r\n\t,:")) == 0 { + return nil, io.EOF + } + return nil, io.ErrUnexpectedEOF + } return nil, transformSyntacticError(err) } switch k := tok.Kind(); k { |