X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fearly-c.lisp;h=1e3f6162329ff0939b4e5ebb551183deb2edb3a1;hb=b767eae48831153473226b985511c8f7a3ef98c5;hp=c0dba380715d21c42bfa08001cb7add1d24abf6e;hpb=5ec8d0c1c8b7939818b75118b472fac1af554f9a;p=sbcl.git

diff --git a/src/compiler/early-c.lisp b/src/compiler/early-c.lisp
index c0dba38..1e3f616 100644
--- a/src/compiler/early-c.lisp
+++ b/src/compiler/early-c.lisp
@@ -73,12 +73,12 @@
 (defvar *lexenv*)
 (declaim (type lexenv *lexenv*))
 
-;;; *FREE-VARIABLES* translates from the names of variables referenced
-;;; globally to the LEAF structures for them. *FREE-FUNCTIONS* is like
-;;; *FREE-VARIABLES*, only it deals with function names.
-(defvar *free-variables*)
-(defvar *free-functions*)
-(declaim (type hash-table *free-variables* *free-functions*))
+;;; *FREE-VARS* translates from the names of variables referenced
+;;; globally to the LEAF structures for them. *FREE-FUNS* is like
+;;; *FREE-VARS*, only it deals with function names.
+(defvar *free-vars*)
+(defvar *free-funs*)
+(declaim (type hash-table *free-vars* *free-funs*))
 
 ;;; We use the same CONSTANT structure to represent all equal anonymous
 ;;; constants. This hashtable translates from constants to the LEAFs that
@@ -115,6 +115,18 @@
 (defvar *trace-table*)
 (defvar *undefined-warnings*)
 (defvar *warnings-p*)
+
+;;; unique ID for the next object created (to let us track object
+;;; identity even across GC, useful for understanding weird compiler
+;;; bugs where something is supposed to be unique but is instead
+;;; exists as duplicate objects)
+#!+sb-show
+(progn
+  (defvar *object-id-counter* 0)
+  (defun new-object-id ()
+    (prog1
+	*object-id-counter*
+      (incf *object-id-counter*))))
 
 ;;;; miscellaneous utilities