libstdc++: Silence -Wattributes warning in exception_ptr

libstdc++-v3/ChangeLog:

	* libsupc++/exception_ptr.h (__exception_ptr::_M_safe_bool_dummy):
	Remove __attribute__((const)) from function returning void.

(cherry picked from commit 164c1b1f812da5d1e00fc10a415e80f7c508efcb)

diff --git a/libstdc++-v3/libsupc++/exception_ptr.h b/libstdc++-v3/libsupc++/exception_ptr.h
index 7c234ce0bf20083b0604a5cc32117816fe32c412..ee977a8a6eac3d1e5962e7a06024a1313cf42524 100644 (file)
--- a/libstdc++-v3/libsupc++/exception_ptr.h
+++ b/libstdc++-v3/libsupc++/exception_ptr.h
@@ -151,8 +151,7 @@ namespace std _GLIBCXX_VISIBILITY(default)
 
 #ifdef _GLIBCXX_EH_PTR_COMPAT
       // Retained for compatibility with CXXABI_1.3.
-      void _M_safe_bool_dummy() _GLIBCXX_USE_NOEXCEPT
-       __attribute__ ((__const__));
+      void _M_safe_bool_dummy() _GLIBCXX_USE_NOEXCEPT;
       bool operator!() const _GLIBCXX_USE_NOEXCEPT
        __attribute__ ((__pure__));
       operator __safe_bool() const _GLIBCXX_USE_NOEXCEPT;