Xen devel - Jul 2007 - [PATCH] fix for bz #858 - hanging domUs with gcc 4.2

Hi,

This bug:
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=858
is caused by -fstrict-aliasing being enabled by default in gcc 4.2 when -O2,
-O3, or -Os are used.  (Quick recap of the bug:  When the tools are built using
gcc 4.2, various hangs of the domUs are observed.)

The simplest fix is to disable strict aliasing for xenstore.  Please apply the
following patch to xen-unstable (and xen-3.1, if fixes are being accumulated
there).

Thanks.

Signed-off-by: Charles Coffing <ccoffing@novell.com>


--- xen-3.1-testing.orig/tools/xenstore/Makefile
+++ xen-3.1-testing/tools/xenstore/Makefile
@@ -6,7 +6,7 @@ MAJOR = 3.0
 MINOR = 0

 PROFILE=#-pg
-BASECFLAGS=-Werror
+BASECFLAGS=-Werror -fno-strict-aliasing
 # Make gcc generate dependencies.
 BASECFLAGS += -Wp,-MD,.$(@F).d
 PROG_DEP = .*.d



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