[libcxx] r295417 - Work around Clang assertion when testing C++17 deduction guides with '-g'.

[Steven Wu via cfe-commits]

Hi Eric

Looks like the issue is fixed in r295794? Now green dragon is failing due to XPASS.
http://lab.llvm.org:8080/green/job/clang-stage2-cmake-RgSan_check/3018/testReport/

Can we remove that XFAILs in these two files?
std/strings/basic_string/string_cons.implicit_deduction_guides.pass.cpp
std/strings/string_view/string_view_cons.implicit_deduction_guides.pass.cpp

Thanks

Steven

> On Feb 16, 2017, at 9:04 PM, Eric Fiselier via cfe-commits <cfe-commits at lists.llvm.org> wrote:
> 
> Author: ericwf
> Date: Thu Feb 16 23:04:09 2017
> New Revision: 295417
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=295417&view=rev
> Log:
> Work around Clang assertion when testing C++17  deduction guides with '-g'.
> 
> Modified:
>    libcxx/trunk/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp
> 
> Modified: libcxx/trunk/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp
> URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp?rev=295417&r1=295416&r2=295417&view=diff
> ==============================================================================
> --- libcxx/trunk/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp (original)
> +++ libcxx/trunk/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp Thu Feb 16 23:04:09 2017
> @@ -10,6 +10,10 @@
> // UNSUPPORTED: c++98, c++03, c++11, c++14
> // UNSUPPORTED: libcpp-no-deduction-guides
> 
> +// FIXME(EricWF): As of 16/Feb/2017 Clang hits an assertion when compiling this
> +// test with '-g' (as the sanitizers do).
> +// XFAIL: ubsan, asan, msan, tsan
> +
> // <string>
> 
> // Test that the constructors offered by std::basic_string are formulated
> 
> 
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