[Sbcl-commits] CVS: sbcl BUGS,1.347,1.348 NEWS,1.410,1.411 version.lisp-expr,1.1252,1.1253

[Christophe R. <cr...@us...>]

Update of /cvsroot/sbcl/sbcl
In directory sc8-pr-cvs1:/tmp/cvs-serv17810

Modified Files:
	BUGS NEWS version.lisp-expr 
Log Message:
0.8.3.68:
	Kludge around an apparent problem in hardware/kernel/somewhere
	to do with denormalized float traps...
	... explicitly clear that bit in os_restore_fp_control();
	... document in BUGS;
	... handle ARITHMETIC-ERROR, not just DIVISION-BY-ZERO, so that
		ports without fp words in sigcontext pass the test


Index: BUGS
===================================================================
RCS file: /cvsroot/sbcl/sbcl/BUGS,v
retrieving revision 1.347
retrieving revision 1.348
diff -u -d -r1.347 -r1.348
--- BUGS	13 Sep 2003 10:39:27 -0000	1.347
+++ BUGS	15 Sep 2003 15:09:01 -0000	1.348
@@ -1245,3 +1245,13 @@
   requires less registers than [x y z + +]. This transformation is
   currently performed with source transforms, but it would be good to
   also perform it in IR1 optimization phase.
+
+290: Alpha floating point and denormalized traps
+  In SBCL 0.8.3.6x on the alpha, we work around what appears to be a
+  hardware or kernel deficiency: the status of the enable/disable
+  denormalized-float traps bit seems to be ambiguous; by the time we
+  get to os_restore_fp_control after a trap, denormalized traps seem
+  to be enabled.  Since we don't want a trap every time someone uses a
+  denormalized float, in general, we mask out that bit when we restore
+  the control word; however, this clobbers any change the user might
+  have made.

Index: NEWS
===================================================================
RCS file: /cvsroot/sbcl/sbcl/NEWS,v
retrieving revision 1.410
retrieving revision 1.411
diff -u -d -r1.410 -r1.411
--- NEWS	15 Sep 2003 11:31:56 -0000	1.410
+++ NEWS	15 Sep 2003 15:09:02 -0000	1.411
@@ -2049,6 +2049,10 @@
     MEMBER-types to numeric.
   * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
     McNaught)
+  * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
+    argument now works properly on the Alpha platform.
+  * bug fix: floating point exception treatment on the Alpha platform
+    is improved.
   * fixed some bugs revealed by Paul Dietz' test suite:
     ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
     ** ROUND and FROUND now give the right answer when given very

Index: version.lisp-expr
===================================================================
RCS file: /cvsroot/sbcl/sbcl/version.lisp-expr,v
retrieving revision 1.1252
retrieving revision 1.1253
diff -u -d -r1.1252 -r1.1253
--- version.lisp-expr	15 Sep 2003 13:45:16 -0000	1.1252
+++ version.lisp-expr	15 Sep 2003 15:09:02 -0000	1.1253
@@ -17,4 +17,4 @@
 ;;; checkins which aren't released. (And occasionally for internal
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
-"0.8.3.67"
+"0.8.3.68"