[libcxxabi] r331150 - Move _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS macro to build system

[Nico Weber via cfe-commits]

tzik, can you take a look what's up on those bots?

On Tue, May 1, 2018, 5:48 AM Maxim Kuvyrkov <maxim.kuvyrkov at linaro.org>
wrote:

> Hi Nico,
>
> This broke armv7 and aarch64 bots:
> -
> http://lab.llvm.org:8011/builders/libcxx-libcxxabi-libunwind-armv7-linux/builds/87
> -
> http://lab.llvm.org:8011/builders/libcxx-libcxxabi-libunwind-aarch64-linux/builds/1304
>
> Would you please investigate?
>
> --
> Maxim Kuvyrkov
> www.linaro.org
>
>
>
> > On Apr 30, 2018, at 2:10 AM, Nico Weber via cfe-commits <
> cfe-commits at lists.llvm.org> wrote:
> >
> > This should have said "Patch from Taiju Tsuiki <tzik at chromium.org>",
> apologies.
> >
> > On Sun, Apr 29, 2018 at 7:05 PM, Nico Weber via cfe-commits <
> cfe-commits at lists.llvm.org> wrote:
> > Author: nico
> > Date: Sun Apr 29 16:05:11 2018
> > New Revision: 331150
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=331150&view=rev
> > Log:
> > Move _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS macro to build
> system
> >
> > _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS is currently used to
> > bring back std::unexpected, which is removed in C++17, but still needed
> > for libc++abi for backward compatibility.
> >
> > This macro used to define in cxa_exception.cpp only, but actually
> > needed for all sources that touches exceptions.
> > So, a build-system-level macro is better fit to define this macro.
> >
> > https://reviews.llvm.org/D46056
> > Patch from Taiju Tsuiku <tzik at chromium.org>!
> >
> > Modified:
> >     libcxxabi/trunk/CMakeLists.txt
> >     libcxxabi/trunk/src/cxa_exception.cpp
> >     libcxxabi/trunk/test/test_exception_storage.pass.cpp
> >
> > Modified: libcxxabi/trunk/CMakeLists.txt
> > URL:
> http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/CMakeLists.txt?rev=331150&r1=331149&r2=331150&view=diff
> >
> ==============================================================================
> > --- libcxxabi/trunk/CMakeLists.txt (original)
> > +++ libcxxabi/trunk/CMakeLists.txt Sun Apr 29 16:05:11 2018
> > @@ -387,6 +387,10 @@ endif()
> >  # Prevent libc++abi from having library dependencies on libc++
> >  add_definitions(-D_LIBCPP_DISABLE_EXTERN_TEMPLATE)
> >
> > +# Bring back `std::unexpected`, which is removed in C++17, to support
> > +# pre-C++17.
> > +add_definitions(-D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS)
> > +
> >  if (MSVC)
> >    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
> >  endif()
> >
> > Modified: libcxxabi/trunk/src/cxa_exception.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/src/cxa_exception.cpp?rev=331150&r1=331149&r2=331150&view=diff
> >
> ==============================================================================
> > --- libcxxabi/trunk/src/cxa_exception.cpp (original)
> > +++ libcxxabi/trunk/src/cxa_exception.cpp Sun Apr 29 16:05:11 2018
> > @@ -11,8 +11,6 @@
> >  //
> >
> //===----------------------------------------------------------------------===//
> >
> > -#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
> > -
> >  #include "cxxabi.h"
> >
> >  #include <exception>        // for std::terminate
> >
> > Modified: libcxxabi/trunk/test/test_exception_storage.pass.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/test/test_exception_storage.pass.cpp?rev=331150&r1=331149&r2=331150&view=diff
> >
> ==============================================================================
> > --- libcxxabi/trunk/test/test_exception_storage.pass.cpp (original)
> > +++ libcxxabi/trunk/test/test_exception_storage.pass.cpp Sun Apr 29
> 16:05:11 2018
> > @@ -7,11 +7,6 @@
> >  //
> >
> //===----------------------------------------------------------------------===//
> >
> > -// FIXME: cxa_exception.hpp directly references `std::unexpected` and
> friends.
> > -// This breaks this test when compiled in C++17. For now fix this by
> manually
> > -// re-enabling the STL functions.
> > -#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
> > -
> >  #include <cstdlib>
> >  #include <algorithm>
> >  #include <iostream>
> >
> >
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> >
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