On Fri, Jul 1, 2016 at 4:22 PM, Eric Fiselier via cfe-commits < cfe-commits@lists.llvm.org> wrote:
> Author: ericwf > Date: Fri Jul 1 18:22:25 2016 > New Revision: 274403 > > URL: http://llvm.org/viewvc/llvm-project?rev=274403&view=rev > Log: > Work around ABI break caused by C++17 inline variables. > > Modified: > libcxx/trunk/src/chrono.cpp > > Modified: libcxx/trunk/src/chrono.cpp > URL: > http://llvm.org/viewvc/llvm-project/libcxx/trunk/src/chrono.cpp?rev=274403&r1=274402&r2=274403&view=diff > > ============================================================================== > --- libcxx/trunk/src/chrono.cpp (original) > +++ libcxx/trunk/src/chrono.cpp Fri Jul 1 18:22:25 2016 > @@ -6,7 +6,7 @@ > // Source Licenses. See LICENSE.TXT for details. > // > > > //===----------------------------------------------------------------------===// > - > +#define _LIBCPP_BUILDING_CHRONO > #include "chrono" > #include "cerrno" // errno > #include "system_error" // __throw_system_error > @@ -32,6 +32,9 @@ namespace chrono > // system_clock > > const bool system_clock::is_steady; > Can you mark this as __attribute__((used)) instead of adding a separate use? > +// Make is_steady non-discardable in C++17 > +// See PR28395 (https://llvm.org/bugs/show_bug.cgi?id=28395) > +static const bool& __is_steady_force_use1 __attribute__((used)) = > system_clock::is_steady; > > system_clock::time_point > system_clock::now() _NOEXCEPT > @@ -68,6 +71,10 @@ system_clock::from_time_t(time_t t) _NOE > // instead. > > const bool steady_clock::is_steady; > +// Make is_steady non-discardable in C++17 > +// See PR28395 (https://llvm.org/bugs/show_bug.cgi?id=28395) > +static const bool& __is_steady_force_use2 __attribute__((used)) = > steady_clock::is_steady; > + > > #ifdef CLOCK_MONOTONIC > > > > _______________________________________________ > cfe-commits mailing list > cfe-commits@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits >
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