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-rw-r--r--libstdc++-v3/config/abi/pre/gnu.ver3
1 files changed, 3 insertions, 0 deletions
diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index 6028acfaab9..d2116fa256e 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -1675,6 +1675,9 @@ GLIBCXX_3.4.21 {
_ZNSt7__cxx1112basic_string*;
_ZNKSt7__cxx1112basic_string*;
+ # operator+ for ABI-tagged std::basic_string
+ _ZStplI[cw]St11char_traitsI[cw]ESaI[cw]EENSt7__cxx1112basic_stringIT_T0_T1_EE*;
+
# ABI-tagged stringstreams
_ZNSt7__cxx1115basic_stringbuf*;
_ZNSt7__cxx1118basic_stringstream*;