When Load Virgil on LispWorks, it was output the warning `(SETF PROGN) function is undefined'

[zqwell]

I tried to load Virgil on LispWorks 6.0 Personal. But, the following Warning(Error) was output.

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The following function is undefined: (SETF PROGN) which is referenced by (METHOD VIRGIL:ALLOCATE-VALUE (T VIRGIL::ALIGNED-TYPE)), VIRGIL:ALLOCATE-CSTRING,

VIRGIL:WRITE-CSTRING, and (DEFVAR VIRGIL::STRING-POINTER-MAPPINGS)

[Lovesan]

Hello! I suppose, this has something to do with compiler macro (mis?)behavior on LispWorks. Although LW is not main development platform(which is SBCL, or sometimes, CCL), i'll see what i can do to fix this bug