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-rw-r--r--extension/inplace.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/extension/inplace.c b/extension/inplace.c
index e09f9000..ded4746c 100644
--- a/extension/inplace.c
+++ b/extension/inplace.c
@@ -27,6 +27,9 @@
#include <config.h>
#endif
+#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE_EXTENDED
+
#include <stdio.h>
#include <assert.h>
#include <errno.h>