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-rw-r--r--wcsmbs/mbrtowc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/wcsmbs/mbrtowc.c b/wcsmbs/mbrtowc.c
index 9809ed51a2..b67b3f7d34 100644
--- a/wcsmbs/mbrtowc.c
+++ b/wcsmbs/mbrtowc.c
@@ -49,6 +49,7 @@ __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
   data.__internal_use = 1;
   data.__flags = __GCONV_IS_LAST;
   data.__statep = ps ?: &state;
+  memset (&data.__trans, '\0', sizeof (struct __gconv_trans_data));
 
   /* A first special case is if S is NULL.  This means put PS in the
      initial state.  */