libstdc++: Add missing exports for std::call_once on Windows [PR123908]

libstdc++-v3/ChangeLog:

	PR libstdc++/123908
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.35): Add exports for
	std::__get_once_callable and std::__get_once_call.

diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index fb78782eaf6d76ebe924f23ccc84e76371d61a1d..fb968e122d8ab5b3d99026a9b69a95c4b1b685ae 100644 (file)
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -2586,6 +2586,12 @@ GLIBCXX_3.4.35 {
     _ZNSt12__cow_stringaSERKS_;
     _ZNSt12__cow_stringaSEOS_;
     _ZNKSt12__cow_string5c_strEv;
+
+#if defined (_WIN32) && !defined (__CYGWIN__)
+    _ZSt19__get_once_callablev;
+    _ZSt15__get_once_callv;
+#endif
+
 } GLIBCXX_3.4.34;
 
 # Symbols in the support library (libsupc++) have their own tag.