Date: Fri, 28 Nov 2014 10:34:16 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-current@freebsd.org Subject: Possible bug in softfloat Message-ID: <20141128183416.GA71749@troutmask.apl.washington.edu>
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In a thread on comp.lang.c, it was pointed out that softfloat
has a bug and in checking src/lib/libc/softfloat I confimed
the issue is present in FreeBSD. What I hae not confirmed
is whether or not it is possible to hit this bug. In fact,
it may only hit arm and mips. Anyway, here's the patch
Index: softfloat/bits64/softfloat-macros
===================================================================
--- softfloat/bits64/softfloat-macros (revision 275211)
+++ softfloat/bits64/softfloat-macros (working copy)
@@ -157,7 +157,7 @@
z0 = a0>>count;
}
else {
- z1 = ( count < 64 ) ? ( a0>>( count & 63 ) ) : 0;
+ z1 = ( count < 128 ) ? ( a0>>( count & 63 ) ) : 0;
z0 = 0;
}
*z1Ptr = z1;
--
Steve
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