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* [gcc r14-4313] libstdc++: Force _Hash_node_value_base methods inline to fix abi (PR111050)
@ 2023-09-28 17:24 Francois Dumont
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From: Francois Dumont @ 2023-09-28 17:24 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:2c1e3544a94c5d7354fad031e1f9731c3ce3af25
commit r14-4313-g2c1e3544a94c5d7354fad031e1f9731c3ce3af25
Author: Tim Song <t.canens.cpp@gmail.com>
Date: Wed Sep 6 19:31:55 2023 +0200
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__]].
Diff:
---
libstdc++-v3/include/bits/hashtable_policy.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libstdc++-v3/include/bits/hashtable_policy.h b/libstdc++-v3/include/bits/hashtable_policy.h
index 347d468ea86..86b32fb15f2 100644
--- 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(); }
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