X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Fppc%2Falloc.lisp;h=58d95479ec17811de39480094555ff3cb8b97bf7;hb=7deecae2d959173eda6a153d490c752c32050a9e;hp=d2b5a2a1cf2d3b14857284a12401e25d5590b806;hpb=6822034325136cde4e14773c83c3769b42721306;p=sbcl.git

diff --git a/src/compiler/ppc/alloc.lisp b/src/compiler/ppc/alloc.lisp
index d2b5a2a..58d9547 100644
--- a/src/compiler/ppc/alloc.lisp
+++ b/src/compiler/ppc/alloc.lisp
@@ -197,7 +197,7 @@
   (:temporary (:sc non-descriptor-reg :offset nl3-offset) pa-flag)
   (:generator 6
     (inst addi bytes extra (* (1+ words) n-word-bytes))
-    (inst slwi header bytes (- n-widetag-bits 2))
+    (inst slwi header bytes (- n-widetag-bits n-fixnum-tag-bits))
     (inst addi header header (+ (ash -2 n-widetag-bits) type))
     (inst clrrwi bytes bytes n-lowtag-bits)
     (pseudo-atomic (pa-flag)