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-rw-r--r--src/internal/floatscan.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/internal/floatscan.c b/src/internal/floatscan.c
index 08251213..f6e331d4 100644
--- a/src/internal/floatscan.c
+++ b/src/internal/floatscan.c
@@ -4,6 +4,7 @@
#include <float.h>
#include <limits.h>
#include <errno.h>
+#include <ctype.h>
#include "shgetc.h"
#include "floatscan.h"