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The command interpreter does leave command_errmsg as is after printing its content, assuming the next command will reset it in bf_command(). However, in case the forth native word is defined as builtin, the bf_command is not used and forth words will also end up the command_errmsg content printed. Since command_errmsg is pointer to actual error message, which can be static read only string, we can not just set *command_errmsg = '\0', instead we need to reset the pointer itself. Illumos issue: https://www.illumos.org/issues/7405 Reported by: Igor Kozhukhov. Reviewed by: allanjude Approved by: allanjude (mentor) Differential Revision: https://reviews.freebsd.org/D8032
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