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-rw-r--r--string/strxfrm.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/string/strxfrm.c b/string/strxfrm.c
index dd0ad67835..b655daf9e4 100644
--- a/string/strxfrm.c
+++ b/string/strxfrm.c
@@ -22,6 +22,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/param.h>
 
 #ifndef STRING_TYPE
 # define STRING_TYPE char
@@ -124,7 +125,7 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n, __locale_t l)
   if (nrules == 0)
     {
       if (n != 0)
-	STPNCPY (dest, src, n);
+	STPNCPY (dest, src, MIN (srclen + 1, n));
 
       return srclen;
     }