1.0.41.47: (EXPT 0.0 0.0) and (EXPT 0 0.0) to signal an error

[sbcl.git] / src / code / target-alieneval.lisp

diff --git a/src/code/target-alieneval.lisp b/src/code/target-alieneval.lisp
index 1478207..2113489 100644 (file)
--- a/src/code/target-alieneval.lisp
+++ b/src/code/target-alieneval.lisp
@@ -145,8 +145,8 @@
                            ,@body))))
                     (:local
                      (/show0 ":LOCAL case")
-                     (let* ((var (gensym))
-                            (initval (if initial-value (gensym)))
+                     (let* ((var (sb!xc:gensym "VAR"))
+                            (initval (if initial-value (sb!xc:gensym "INITVAL")))
                             (info (make-local-alien-info :type alien-type))
                             (inner-body
                              `((note-local-alien-type ',info ,var)
@@ -608,7 +608,7 @@ allocated using ``malloc'', so it can be passed to foreign functions which use
        (let ((stub (alien-fun-type-stub type)))
          (unless stub
            (setf stub
-                 (let ((fun (gensym))
+                 (let ((fun (sb!xc:gensym "FUN"))
                        (parms (make-gensym-list (length args))))
                    (compile nil
                             `(lambda (,fun ,@parms)
@@ -822,22 +822,31 @@ ENTER-ALIEN-CALLBACK pulls the corresponsing trampoline out and calls it.")
                             :local ,(alien-callback-accessor-form
                                      spec 'args-sap offset))
                  do (incf offset (alien-callback-argument-bytes spec env)))
-           ,(flet ((store (spec)
+           ,(flet ((store (spec real-type)
                           (if spec
                               `(setf (deref (sap-alien res-sap (* ,spec)))
-                                     (funcall function ,@arguments))
+                                     ,(if real-type
+                                          `(the ,real-type
+                                             (funcall function ,@arguments))
+                                          `(funcall function ,@arguments)))
                               `(funcall function ,@arguments))))
                   (cond ((alien-void-type-p result-type)
-                         (store nil))
+                         (store nil nil))
                         ((alien-integer-type-p result-type)
+                         ;; Integer types should be padded out to a full
+                         ;; register width, to comply with most ABI calling
+                         ;; conventions, but should be typechecked on the
+                         ;; declared type width, hence the following:
                          (if (alien-integer-type-signed result-type)
                              (store `(signed
-                                      ,(alien-type-word-aligned-bits result-type)))
+                                      ,(alien-type-word-aligned-bits result-type))
+                                    `(signed-byte ,(alien-type-bits result-type)))
                              (store
                               `(unsigned
-                                ,(alien-type-word-aligned-bits result-type)))))
+                                ,(alien-type-word-aligned-bits result-type))
+                              `(unsigned-byte ,(alien-type-bits result-type)))))
                         (t
-                         (store (unparse-alien-type result-type)))))))
+                         (store (unparse-alien-type result-type) nil))))))
        (values))))
 
 (defun invalid-alien-callback (&rest arguments)