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-rw-r--r--gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h3
-rw-r--r--gcc-4.9/libstdc++-v3/config/os/mingw32/os_defines.h3
2 files changed, 6 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h b/gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h
index c736f6c..fd5ad9e 100644
--- a/gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h
+++ b/gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h
@@ -78,4 +78,7 @@
#define _GLIBCXX_LLP64 1
#endif
+// See libstdc++/59807
+#define _GTHREAD_USE_MUTEX_INIT_FUNC 1
+
#endif
diff --git a/gcc-4.9/libstdc++-v3/config/os/mingw32/os_defines.h b/gcc-4.9/libstdc++-v3/config/os/mingw32/os_defines.h
index a48c976..8e1fd51 100644
--- a/gcc-4.9/libstdc++-v3/config/os/mingw32/os_defines.h
+++ b/gcc-4.9/libstdc++-v3/config/os/mingw32/os_defines.h
@@ -75,4 +75,7 @@
#define _GLIBCXX_LLP64 1
#endif
+// See libstdc++/59807
+#define _GTHREAD_USE_MUTEX_INIT_FUNC 1
+
#endif