gdal_translate -expand rgba produces wrong colors (but pct2rgb.py -rgba produces correct colors

[hemantbist]

What is the bug?

gdal_translate -expand rgba  a.tif /tmp/gdal.tif  # This produces a tif file with incorrect colors.pct2rgb.py -rgba a.tif  gdal_good.tif # This produces the tif file with correct colors.

I have tried it on 3.4.3 and on some earlier version. The  behavior is same.

a.tif.gz

Steps to reproduce the issue

The a.tif is attached with bug.
gdal_translate -expand rgba a.tif gdalbad.tif # This produces a tif file with incorrect colors.
pct2rgb.py -rgba a.tif gdalgood.tif # This produces the tif file with correct colors.

view it in a viewer e.g. qgis. The gdalgood.tif produces correct colors. [Mostly Blue with transparency]. This is same as a.tif
gdaltif productrs bad colors.

Versions and provenance

ubuntu 20.04
gdal_translate --version
GDAL 3.4.3, released 2022/04/22

Additional context

No response

[rouault]

fix in #9403. Easy workaround: add -ot Byte

[hemantbist]

Thanks, The workaround works! Will mark it as closed.