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-rw-r--r--resolv/res_libc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/resolv/res_libc.c b/resolv/res_libc.c
index c7561c9..9f9af1d 100644
--- a/resolv/res_libc.c
+++ b/resolv/res_libc.c
@@ -22,8 +22,15 @@
#undef _res
+#include <tls.h>
+
+#if USE_TLS && HAVE___THREAD
+/* With __thread support, this per-thread variable is used in all cases. */
+__thread struct __res_state _res;
+#else
/* The resolver state for use by single-threaded programs. */
struct __res_state _res;
+#endif
/* This function is used to access the resolver state in
single-threaded programs. */