0.8.3.69:

[sbcl.git] / README

diff --git a/README b/README
index 5fed77a..f02c9ec 100644 (file)
--- a/README
+++ b/README
@@ -37,3 +37,13 @@ for OpenBSD:
   is just allocating this huge address space, not actually using this
   huge memory at this point. OpenBSD <3.0 had no problem with this,
   but OpenBSD 3.0 is less hospitable.)
+
+for Darwin:
+  PURIFY (which can be used alone but is also used by the system when
+  saving a new core) uses more stack than the default limit on MacOS
+  X.2.  Therefore, in order to get PURIFY to work reliably, you need
+  to increase the limit, with e.g.
+    limit stack 8192 # for the default shell, tcsh
+    ulimit -s 8192 # for bash
+  before running SBCL.  This is also necessary when building the system
+  from sources, as part of the build process involves saving a new core.