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-rw-r--r--src/ctype/wcwidth.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ctype/wcwidth.c b/src/ctype/wcwidth.c
index ebc560a5..eaafd7cb 100644
--- a/src/ctype/wcwidth.c
+++ b/src/ctype/wcwidth.c
@@ -1,5 +1,6 @@
#include <inttypes.h>
#include <wchar.h>
+#include <wctype.h>
#define R(a,b,w) { (b), (w)/2, (b)-(a) }