[Xen-bugs] [Bug 1062] Incomplete build Xen 3.1 with GCC 4.2

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1062





------- Comment #1 from hector.sanchez@xxxxxxxxx  2007-11-19 08:40 -------
Created an attachment (id=698)
 --> (http://bugzilla.xensource.com/bugzilla/attachment.cgi?id=698&action=view)
Proposal for a patch for this bug in xc_core.c compilling xen tools.

Hello,

First, excuse me for my bad English, and then, and then send you a proposal for
a patch to fix the problem compiling xen-3.1.0. whith any gcc.

Try the patch and check whether the problem has been solved. I have a AMD64x2,
and has allowed me to compile and operate normally.

The error compiling:
...
-I../xenstore -Wp,-MD,.xc_core.o.d -c -o xc_core.o xc_core.c
cc1: warnings being treated as errors
xc_core.c: In function â??xc_core_shdr_getâ??:
xc_core.c:195: warning: assuming signed overflow does not occur when
assuming that (X + c) < X is always false
make[4]: *** [xc_core.o] Error 1
make[4]: Leaving directory `/usr/src/xen-3.1.0-src/tools/libxc' 
...

In file xen-src/tools/libxc/xc_core.c line:195

if SHDR_INC is a positive number, this sentence always will be false, so I
deleted this lines.

if ( sheaders->num_max + SHDR_INC < sheaders->num_max )
        {
            errno = E2BIG;
            return NULL;
        }

I hope that this patch helpful. BYE!!


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