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libstdc++: Ensure C++20 std::stringstream definitions use correct ABI

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The definitions of the new C++20 members of std::stringstream etc are
missing when --with-default-libstdcxx-abi=gcc4-compatible is used,
because all the explicit instantiations in src/c++20/sstream-inst.cc are
skipped.

This ensures the contents of that file are compiled with the new ABI, so
the same set of symbols are exported regardless of which ABI is active
by default.

libstdc++-v3/ChangeLog:

	* src/c++20/sstream-inst.cc (_GLIBCXX_USE_CXX11_ABI): Define to
	select new ABI.
This commit is contained in:
Jonathan Wakely 2021-11-30 22:04:49 +00:00
parent 955ea7b58e
commit 56b07badf0
1 changed files with 3 additions and 1 deletions
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4
libstdc++-v3/src/c++20/sstream-inst.cc
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@ -26,7 +26,9 @@
// ISO C++ 14882:
//
// Instantiations in this file are only for the new SSO std::string ABI
// Instantiations in this file are only for the new SSO std::string ABI.
#define _GLIBCXX_USE_CXX11_ABI 1
#include <sstream>
#if _GLIBCXX_USE_CXX11_ABI