I am able to run "tar ft somefile.tar" successfully on a Linux
machine, same tar version (1.29.)

This version hangs up the terminal, does not respond to Ctrl-C or
Ctrl-Z, and terminates with an illegal instruction to the screen, not
reflected in the strace output.

File cygwin_tar_1_29_illegal_instruction.txt is attached with strace
output, version, and "cygcheck tar" output.