Comments (2)
I had a look. The reason is that setf macroexpands the place forms using the host get-setf-expansion
function, instead of the target one. Why? Because get-setf-expansion
is not available to call yet, of course.. so you get a call to %rplaca
, which is the internal SBCL function for (setf car)
.
(get-setf-expansion `(car x))
;; =>
(#:X29814)
(X)
(#:NEW29813)
(SB-KERNEL:%RPLACA #:X29814 #:NEW29813)
(CAR #:X29814)
It should be possible to fix it hacking the setf implementation a little bit to keep setf-expanders at compile-time in our own structure. Something similar what we do with macros itself.
This change would look like moving setf implementation to its own file, which should be loaded both in host and in target, prefixing with a bang character to avoid clashes and defining aliases to the current names in the target.
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I implemented a basic eval-when
(30f1522). It allowed to fix the semantic of define-setf-expander at compile-time (317e7d8). In particular it fixes this ticket.
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Related Issues (20)
- Wrong character reading
- default key values bug HOT 1
- The "ANSI Compliance milestone" Link on the Wiki is Broken HOT 2
- Function EXPORT not working as expected while compiling.
- Macros are treated as function while compiling
- ERROR: Function 'LOG' undefined HOT 1
- feature testing not work as intended at compile time HOT 1
- nested feature testing: ERROR: ECASE expression failed for the object `NIL'. HOT 1
- ERROR: Function 'EQUALP' undefined HOT 2
- ERROR: Function 'BIT-VECTOR-P' undefined
- ERROR: Function 'FLOAT' undefined HOT 2
- make-array: ERROR: Unknown keyword argument INITIAL-CONTENTS
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- (SETF GETF) is buggy HOT 3
- vector dimensions are wrong HOT 1
- (type-of float-with-exponent) returns 'INTEGER HOT 2
- Race condition in reader HOT 5
- &allow-other-keys not working
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