From 922e465b468ffc9a924fecaa3519b5e3e518b914 Mon Sep 17 00:00:00 2001
From: David Young <dyoung@hdfgroup.org>
Date: Mon, 6 Jul 2020 21:12:38 -0500
Subject: Provide an HDvasprintf implementation only if it isn't #defined. 
 This should fix the mingw compilation issue that Allen reported.

---
 src/H5system.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/H5system.c b/src/H5system.c
index 6722488..310eb11 100644
--- a/src/H5system.c
+++ b/src/H5system.c
@@ -73,6 +73,7 @@
 /* Track whether tzset routine was called */
 static hbool_t H5_ntzset = FALSE;
 
+#ifndef HDvasprintf
 /* HDvasprintf provides vasprintf-like function on targets where it is
  * unavailable.
  */
@@ -100,6 +101,7 @@ HDvasprintf(char **bufp, const char *fmt, va_list _ap)
     }
     return -1;
 }
+#endif
 
 
 /*-------------------------------------------------------------------------
-- 
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