AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2018.01.16 09:58 "[Tiff] Reading custom TIFF_SSHORT tag causes assertion "we should never get here"", by Robert Pollak
2018.01.18 08:35 "Re: [Tiff] Reading custom TIFF_SSHORT tag causes assertion "we should never get here"", by Robert Pollak

2018.01.16 09:58 "[Tiff] Reading custom TIFF_SSHORT tag causes assertion "we should never get here"", by Robert Pollak

Hello,

I have used libtiff to write TIFF files containing custom tags with the following TIFFFieldInfo:

{37023,-1,-1,TIFF_SSHORT,FIELD_CUSTOM, 1,1, "ProcessStatus"}

When I now read such a file with libtiff (4.0.6), the function TIFFFetchNormalTag reaches the default case with the line:

assert(0);    /* we should never get here */

This happens because set_field_type becomes TIFF_SETGET_C16_SINT16, which is not listed in the switch statement (also on current Git master).

The assertion means that the tag is not read, doesn't it?

Best regards,
Robert