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Diffstat (limited to 'gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h')
-rw-r--r--gcc-4.9/libstdc++-v3/config/os/mingw32-w64/os_defines.h3
1 files changed, 3 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 c736f6c04..fd5ad9ed3 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