On 03/25/2017 01:53 PM, Ken Moffat wrote:
On Sat, Mar 25, 2017 at 12:29:41PM -0400, Richard wrote:
In the LFS-7.10 book the following note
related to the gcc testsuite is included:
----------------------------------------------------------
On some systems, numerous test failures
(over 1100 unexpected failures out of
over 200,000 tests) have been reported.
These failures in gcc.target/i386/mpx/
are related to the Intel MPX (Memory
Protection Extensions) tests and failures
are due to the kernel configuration or
the specific CPU architecture. These test
failures are harmless and can be ignored.
----------------------------------------------------------
I don't see this note in the LFS-8.0 book.
However when I run the test suite for
gcc-6.3.0 I get 1141 unexpected failures
from the gcc.target/i386/mpx/ directory. I
wanted to mention this in case anyone
else is getting these errors, and I guess
I am also hoping this note will be included
again in future versions of the book,
unless these failures can be resolved.
Richard
Interesting. I mentioned this in September for 7.10 after noticing
it on one old AMD machine. I now recall that one reason for such
failures was using a kernel which does not support 32-bit emulation,
i.e. CONFIG_IA32_EMULATION.
Looking back, for 8.0 I see large numbers of failures on three of my
boxes: an old Athlon64 x2, a not-quite so old AMD Phenom X4, and my
recent intel i3 Skylake which runs as my server. In the case of (at
least) my skylake I *do* have that config option set.
But on my haswell and A10 Kaveri where I did my initial builds, the
number of gcc failures was in single figures.
ĸen
I am getting these failures on a 32-bit Intel P4 machine.
I don't see the CONFIG_IA32_EMULATION option
anywhere in my .config file.
Richard
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