/usr/share/gnu-smalltalk/unsupported/ is in gnu-smalltalk-common 3.2.5-1build2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gnu-smalltalk/unsupported/CPP-test.st
/usr/share/gnu-smalltalk/unsupported/CParseType-test.st
/usr/share/gnu-smalltalk/unsupported/CString.st
/usr/share/gnu-smalltalk/unsupported/DLD.st
/usr/share/gnu-smalltalk/unsupported/Interr.st
/usr/share/gnu-smalltalk/unsupported/Process.st
/usr/share/gnu-smalltalk/unsupported/Profile.st
/usr/share/gnu-smalltalk/unsupported/Sorting.st
/usr/share/gnu-smalltalk/unsupported/echo.st
/usr/share/gnu-smalltalk/unsupported/market.st
/usr/share/gnu-smalltalk/unsupported/resolve.st
/usr/share/gnu-smalltalk/unsupported/t.st
/usr/share/gnu-smalltalk/unsupported/torture.st