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-rw-r--r--src/shared/macro.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/shared/macro.h b/src/shared/macro.h
index fd3762eed4..2b5b3fdfe0 100644
--- a/src/shared/macro.h
+++ b/src/shared/macro.h
@@ -300,5 +300,17 @@ do { \
_found; \
})
+/* Define C11 thread_local attribute even on older compilers */
+#ifndef thread_local
+/*
+ * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__
+ * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769
+ */
+#if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
+#define thread_local _Thread_local
+#else
+#define thread_local __thread
+#endif
+#endif
#include "log.h"