libstdc++-v3/ChangeLog:
PR libstdc++/100060
* include/std/bit: Only include <ext/numeric_traits.h> for
hosted build, use <limits> otherwise.
Tested powerpc64le-linux. Committed to trunk.
This needs to be backported to gcc-10 too.
commit 474cb5a0a404c5de7c1cd21aac8b1b7e7ce95d9b
Author: Jonathan Wakely <[email protected]>
Date: Tue Apr 13 16:55:37 2021
libstdc++: Fix <bit> to work freestanding [PR 100060]
libstdc++-v3/ChangeLog:
PR libstdc++/100060
* include/std/bit: Only include <ext/numeric_traits.h> for
hosted build, use <limits> otherwise.
diff --git a/libstdc++-v3/include/std/bit b/libstdc++-v3/include/std/bit
index fb78578448c..c5aae8bab03 100644
--- a/libstdc++-v3/include/std/bit
+++ b/libstdc++-v3/include/std/bit
@@ -34,7 +34,23 @@
#if __cplusplus >= 201402L
#include <type_traits>
-#include <ext/numeric_traits.h>
+
+#if _GLIBCXX_HOSTED
+# include <ext/numeric_traits.h>
+#else
+# include <limits>
+/// @cond undocumented
+namespace __gnu_cxx
+{
+ template<typename _Tp>
+ struct __int_traits
+ {
+ static constexpr int __digits = std::numeric_limits<_Tp>::digits;
+ static constexpr _Tp __max = std::numeric_limits<_Tp>::max();
+ };
+}
+/// @endcond
+#endif
namespace std _GLIBCXX_VISIBILITY(default)
{
