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The standard string to unsigned double conversion word >NUMBER and the non-standard counted string to signed double conversion word NUMBER? fail when the string is lower case and BASE is greater than 10, e.g.

HEX
0 0 S" 03fe" >NUMBER 2DROP UD.
3 ok
C" -3fd" NUMBER? DROP D.
-3 ok

The string conversion works if the characters are uppercase:
HEX
0 0 S" 03FE" >NUMBER 2DROP UD.
3FE ok
C" -3FD" NUMBER? DROP D.
-3FD ok

The conversions should not be case sensitive.

The current method of obtaining an execution token in the sync64 branch is not compatible with the vector container class used to define wordlists. Pointers to elements in the wordlist may be invalidated when the wordlist is added to, for example with push_back(). This means that the tick operator can return different addresses at different times, and will cause problems in particular with words which use ['] (bracket-tick) in their definitions.

This problem does not apply to the master branch or to the current kForth-64 master branch.

A user reports that kForth-32 (version 2.1.0 from current master branch) built on Puppy Linux 32-bit, derived from Ubuntu Bionic (gcc version 7.4.0), will crash with a seg fault if the stack is printed using the word .S . The user also reports that performing the Hayes' Core tests will result in a seg fault crash about halfway through the tests (see forth-src/system-test/core.4th). These problems are not reproducible on any of the following Red Hat-based distributions: RHEL6 32-bit, Centos 7 64-bit, Fedora 30 64-bit.