libstdc++: Force _Hash_node_value_base methods inline to fix abi (PR111050)

https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=1b6f0476837205932613ddb2b3429a55c26c409d
changed _Hash_node_value_base to no longer derive from _Hash_node_base, which means
that its member functions expect _M_storage to be at a different offset. So explosions
result if an out-of-line definition is emitted for any of the member functions (say,
in a non-optimized build) and the resulting object file is then linked with code built
using older version of GCC/libstdc++.

libstdc++-v3/ChangeLog:

	PR libstdc++/111050
	* include/bits/hashtable_policy.h
	(_Hash_node_value_base<>::_M_valptr(), _Hash_node_value_base<>::_M_v())
	Add [[__gnu__::__always_inline__]].

(cherry picked from commit 2c1e3544a94c5d7354fad031e1f9731c3ce3af25)

diff --git a/libstdc++-v3/include/bits/hashtable_policy.h b/libstdc++-v3/include/bits/hashtable_policy.h
index cce4e2844cf41237c1051972d47d4b1866343cdf..2f79394d89ecb197b655a5ec3a7b0fdcfb55391b 100644 (file)
--- a/libstdc++-v3/include/bits/hashtable_policy.h
+++ b/libstdc++-v3/include/bits/hashtable_policy.h
@@ -327,18 +327,22 @@ namespace __detail
 
       __gnu_cxx::__aligned_buffer<_Value> _M_storage;
 
+      [[__gnu__::__always_inline__]]
       _Value*
       _M_valptr() noexcept
       { return _M_storage._M_ptr(); }
 
+      [[__gnu__::__always_inline__]]
       const _Value*
       _M_valptr() const noexcept
       { return _M_storage._M_ptr(); }
 
+      [[__gnu__::__always_inline__]]
       _Value&
       _M_v() noexcept
       { return *_M_valptr(); }
 
+      [[__gnu__::__always_inline__]]
       const _Value&
       _M_v() const noexcept
       { return *_M_valptr(); }