error: #20: identifier "size_t" is undefined

天涯海QxkJX

D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(223): error:  #20: identifier "size_t" is undefined
      size_t mbsnrtowcs(wchar_t * __restrict /*dst*/,
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(225): error:  #20: identifier "size_t" is undefined
                        size_t /*nmb*/,
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(226): error:  #20: identifier "size_t" is undefined
                        size_t /*len*/, mbstate_t * __restrict /*ps*/) __attribute__((__nonnull__(2)));
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(227): error:  #20: identifier "size_t" is undefined
      size_t wcsnrtombs(char * __restrict /*dst*/,
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(229): error:  #20: identifier "size_t" is undefined
                        size_t /*nwc*/,
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(230): error:  #20: identifier "size_t" is undefined
                        size_t /*len*/, mbstate_t * __restrict /*ps*/) __attribute__((__nonnull__(2)));
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(257): error:  #20: identifier "size_t" is undefined
                       const wchar_t * __restrict /*s2*/, size_t /*n*/) __attribute__((__nonnull__(1,2)));
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(259): error:  #20: identifier "size_t" is undefined
                       const wchar_t * __restrict /*s2*/, size_t /*n*/) __attribute__((__nonnull__(1,2)));
D:\Software\Keil_v5\ARM\ARMCC\Bin\..\include\wchar.h(261): error:  #20: identifier "size_t" is undefined
                        const wchar_t * __restrict /*s2*/, size_t /*n*/) __attribute__((__nonnull__(1,2)));
..\HARDWARE\w25qxx.c: 0 warnings, 30 errors
"..\OBJ\demo.axf" - 270 Error(s), 0 Warning(s).

加错头文件引起的血案！！！！

peng1554

网上有遇到，看参考解决得了不https://wenwen.sogou.com/z/q797214535.htm