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-rw-r--r--tools/test/perform/pio_engine.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/test/perform/pio_engine.c b/tools/test/perform/pio_engine.c
index 1c0d621..43a0f64 100644
--- a/tools/test/perform/pio_engine.c
+++ b/tools/test/perform/pio_engine.c
@@ -82,6 +82,12 @@
/* POSIX I/O macros */
+#ifdef H5_HAVE_WIN32_API
+/* Can't link against the library, so this test will use the older, non-Unicode
+ * _open() call on Windows.
+ */
+#define HDopen(S,F,...) _open(S, F | _O_BINARY, __VA_ARGS__)
+#endif /* H5_HAVE_WIN32_API */
#define POSIXCREATE(fn) HDopen(fn, O_CREAT|O_TRUNC|O_RDWR, 0600)
#define POSIXOPEN(fn, F) HDopen(fn, F, 0600)
#define POSIXCLOSE(F) HDclose(F)