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-rw-r--r--Src/system.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/Src/system.h b/Src/system.h
index 33804e71a..ccb12e0c0 100644
--- a/Src/system.h
+++ b/Src/system.h
@@ -703,6 +703,10 @@ extern short ospeed;
  */
 # include <wchar.h>
 # include <wctype.h>
+#ifndef HAVE_WCSWIDTH
+/* wcswidth is missing on OpenBSD: assume single-width characters */
+#define wcswidth(x, y)	(1)
+#endif
 #endif
 #ifdef HAVE_LANGINFO_H
 #  include <langinfo.h>