thread local should be used

["罗勇刚(Yonggang Luo) " <luoyonggang@gmail.com>]

218933012b1f0f052f91ac39ee5cc6daba99237d
 src/multibyte/mbrtowc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/multibyte/mbrtowc.c b/src/multibyte/mbrtowc.c
index e7b3654..de8d5ae 100644
--- a/src/multibyte/mbrtowc.c
+++ b/src/multibyte/mbrtowc.c
@@ -8,15 +8,15 @@
 #include <errno.h>
 #include "internal.h"

+_Thread_local static mbstate_t internal_state;
 size_t mbrtowc(wchar_t *restrict wc, const char *restrict src, size_t
n, mbstate_t *restrict st)
 {
- static unsigned internal_state;
  unsigned c;
  const unsigned char *s = (const void *)src;
  const unsigned N = n;
  wchar_t dummy;

- if (!st) st = (void *)&internal_state;
+ if (!st) st = &internal_state;
  c = *(unsigned *)st;

  if (!s) {

-- 
         此致
礼
罗勇刚
Yours
    sincerely,
Yonggang Luo