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  1. JDK
  2. JDK-8008386

(cs) Unmappable leading should be decoded to replacement.

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    • 6
    • b115
    • Verified

    Backports

      Description


        SHORT SUMMARY:
        Unmappable single byte characters are incorrectly handled in multi-byte
        encodings
        INDICATORS:
        Incorrect decoding performed on multi-byte encoding for cases
        where un-defined single-bytecode points are encountered

        COUNTER INDICATORS:
        TRIGGERS:
        Issue in JDK 6 (and later) since 6227339 was fixed (6 GA)
        KNOWN WORKAROUND: N/A
        PRESENT SINCE: JDK 6 FCS
        HOW TO VERIFY:
        Testcase attached
        NOTES FOR SE:
        Suggestion as per Dev engineer comments :
        The problem of our implementation is that currently if it is not a "valid"
        single-byte,
        it assumes it's a double-byte, and if it's a double-byte, and if it can't be
        mapped to
        anything, treat it as a "un-mappable" double-byte., this is a wrong
        assumption for
        this kind of "undefined" code point. The bottom line is that we should skip
        2, for
        un-mappable double-byte character, but skip only 1, for un-defined
        single-byte
        code point.

        REGRESSION: Yes.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8019336 (cs) Unmappable leading should be decoded to replacement.

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8073150 (cs) Unmappable leading should be decoded to replacement.

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8010075 (cs) Unmappable leading should be decoded to replacement.

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8010076 (cs) Unmappable leading should be decoded to replacement.

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8017405 (cs) Unmappable leading should be decoded to replacement.

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8025896 (cs) Better handling for invalid byte sequences in doublebyte decoders

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8019940 JDK MS932/PCK Encoding issue

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8019941 JDK MS932/PCK Encoding issue

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8160939 TrueType Fonts that use a CJK CMAP encoding are broken by 8008386.

            • P3 - Major loss of function.
            • Open

            Bug - A problem which impairs or prevents the functions of the product. JDK-8075092 Remove erroneous println statement from DoubleByteDecoder

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8161237 Some True Type fonts no longer work in Java 8

            • P3 - Major loss of function.
            • Closed

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                sherman Xueming Shen
                shadowbug Shadow Bug
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                Dates

                  Created:
                  Updated:
                  Resolved: