<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 5, 2016 at 6:21 AM, Hahnfeld, Jonas via cfe-dev <span dir="ltr"><<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hi all,<br>
<br>
I'm currently looking into (optionally) switching the default C++ stdlib to<br>
libc++ (see <a href="http://reviews.llvm.org/D15920" rel="noreferrer" target="_blank">http://reviews.llvm.org/D15920</a> which hasn't received a review so<br>
far)<br>
I've resolved all regression test failures in clang which are now passing<br>
cleanly.<br>
<br>
I'm now investigating the failing sanitizer tests in compiler-rt, here's<br>
what I got so far:<br>
 - two tests use -static-libstdc++ which obviously needs a -stdlib=libstdc++<br>
(asan/TestCases/throw_invoke_test.cc and tsan/static_init6.cc)<br></blockquote><div><br></div><div>Makes sense. </div><div>I wonder if we can also use -static-libc++ for these tests</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
 - tsan builds an instrumented version of libc++ and adds their headers.<br>
This leads to errors with default C headers which are #include_next'd in<br>
libc++. These #include_next then find the headers of the "normal" libc++<br>
which in turn instantly return because of the header guards. Therefore basic<br>
functions like printf aren't defined.<br>
Solution: Pass -nostdinc++ to disable the headers of the "normal" libc++<br></blockquote><div><br></div><div>emm, probably. </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
 - lsan completely fails with libc++, I had to generally pass<br>
-stdlib=libstdc++ - is this known and possibly still work in progress?<br></blockquote><div><br></div><div>This is not known to me. What are the symptoms? </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
Greetings,<br>
Jonas<br>
<br>
--<br>
Jonas Hahnfeld, MATSE-Auszubildender<br>
<br>
IT Center<br>
Group: High Performance Computing<br>
Division: Computational Science and Engineering<br>
RWTH Aachen University<br>
Seffenter Weg 23<br>
D 52074  Aachen (Germany)<br>
<a href="mailto:Hahnfeld@itc.rwth-aachen.de">Hahnfeld@itc.rwth-aachen.de</a><br>
<a href="http://www.itc.rwth-aachen.de" rel="noreferrer" target="_blank">www.itc.rwth-aachen.de</a><br>
<br>
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