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-rw-r--r--stdio-common/perror.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/stdio-common/perror.c b/stdio-common/perror.c
index 239d43edc6..77a1d9fe46 100644
--- a/stdio-common/perror.c
+++ b/stdio-common/perror.c
@@ -39,8 +39,10 @@ perror (const char *s)
 
   errstring = __strerror_r (errnum, buf, sizeof buf);
 
+#ifdef USE_IN_LIBIO
   if (fwide (stderr, 0) > 0)
     (void) fwprintf (stderr, L"%s%s%s\n", s, colon, errstring);
   else
+#endif
     (void) fprintf (stderr, "%s%s%s\n", s, colon, errstring);
 }