191 	fp->_bf._base = nullptr;	/* no buffer */  in __sfp()
192 	fp->_bf._size = 0;  in __sfp()
357   if (fp->_flags & __SMBF) free(fp->_bf._base);  in freopen()
361   fp->_bf._base = nullptr;  in freopen()
362   fp->_bf._size = 0;  in freopen()
421   if (fp->_flags & __SMBF) free(fp->_bf._base);  in __FILE_close()
503   unsigned char* p = fp->_bf._base;  in __sflush()
510   fp->_w = (fp->_flags & (__SLBF|__SNBF)) ? 0 : fp->_bf._size;  in __sflush()
589     result += fp->_p - fp->_bf._base;  in __ftello64_unlocked()
617   if (fp->_bf._base == nullptr) __smakebuf(fp);  in __fseeko64()
626   fp->_p = fp->_bf._base;  in __fseeko64()
1040   f._bf._base = f._p = reinterpret_cast<unsigned char*>(s);  in vsnprintf()
1041   f._bf._size = f._w = n - 1;  in vsnprintf()
1112   if (fp->_bf._base == nullptr) __smakebuf(fp);  in fread_unlocked()
1129     if (total > static_cast<size_t>(fp->_bf._size)) break;  in fread_unlocked()