0.8.20.29:

[sbcl.git] / NEWS

diff --git a/NEWS b/NEWS
index 386f306..c872529 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,12 @@
 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
+  * incompatible change: thread support for non-NPTL systems has
+    been removed - locking is buggy and unreliable.  A threaded 
+    SBCL build will now refuse to start unless futex support is 
+    detected in the kernel
+  * incompatible change: the top level REPL now has only an ABORT
+    restart associated with it, not TOPLEVEL and ABORT as it used to.
+    TOP and TOPLEVEL are now available as debugger commands for 
+    returning to the top level.
   * incompatible change: forms evaluated in the REPL now use the
     global optimization policy.
   * incompatible change: user- and system-initialization files are
@@ -16,6 +24,12 @@ changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
     are now more amenable to inspection by INSPECT.
   * workaround for bug 354: XEPs no longer appear in backtraces unless
     explicitly requested.
+  * fixed bug: receiving the signal which results from attempting to
+    write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
+    SIGBUS on other *BSDs) on architectures where the C stack is also
+    the Lisp stack (x86 and x86-64) from foreign code no longer leads
+    to debugger confusion or wild instability.  (reported by Cheuksan
+    Wang)
   * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
     notes when operating on objects known to be SIMPLE-BIT-VECTORs.
     (reported by Lutz Euler)
@@ -31,8 +45,19 @@ changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
   * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
     STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
     STRING-STREAM and FILE-STREAM, respectively.
+  * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
+    than previously; in addition, its test suite is now run on build.
+    (thanks to Luke Gorrie)
+  * a more robust x86-64 disassembler. (thanks to Lutz Euler)
+  * optimization: added a immediate representation for single-floats 
+    on x86-64
   * fixed some bugs revealed by Paul Dietz' test suite:
     ** MISC.564: defined out-of-line version of %ATAN2 on x86.
+    ** attempting to create a package with a colliding nickname causes
+       correctable errors to be signalled.
+    ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
+    ** several x86-64 backend bugs related to sign-extension of immediate
+       operands.
 
 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
   * fixed inspection of specialized arrays. (thanks to Simon Alexander)