[Bug c++/60304] Including <atomic> disables -Wconversion-null

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60304

--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Ah, that makes a lot of sense! If testing goes well, I mean to commit the
below, which in any case shouldn't hurt:

Index: include/bits/atomic_base.h
===================================================================
--- include/bits/atomic_base.h  (revision 216624)
+++ include/bits/atomic_base.h  (working copy)
@@ -33,7 +33,6 @@
 #pragma GCC system_header

 #include <bits/c++config.h>
-#include <stdbool.h>
 #include <stdint.h>
 #include <bits/atomic_lockfree_defines.h>

Index: include/std/atomic
===================================================================
--- include/std/atomic  (revision 216624)
+++ include/std/atomic  (working copy)
@@ -36,7 +36,7 @@

 #if __cplusplus < 201103L
 # include <bits/c++0x_warning.h>
-#endif
+#else

 #include <bits/atomic_base.h>

@@ -1129,4 +1129,6 @@
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace

-#endif
+#endif // C++11
+
+#endif // _GLIBCXX_ATOMIC