fix by some comments

snappy.cc

@@ -1261,8 +1261,8 @@ void MemCopy64(char* dst, const void* src, size_t size) {
   // RVV acceleration available on RISC-V when compiled with -march=rv64gcv
 #elif defined(__riscv) && SNAPPY_HAVE_RVV
   // Cast pointers to the type we will operate on.
-  unsigned char* dst_ptr = (unsigned char*)dst;
-  const unsigned char* src_ptr = (const unsigned char*)src;
+  unsigned char* dst_ptr = reinterpret_cast<unsigned char*>(dst);
+  const unsigned char* src_ptr = reinterpret_cast<const unsigned char*>(src);
   size_t remaining_bytes = size;
   // Loop as long as there are bytes remaining to be copied.
   while (remaining_bytes > 0) {
@@ -1285,7 +1285,7 @@ void MemCopy64(char* dst, const void* src, size_t size) {
   if (SNAPPY_PREDICT_FALSE(size > kShortMemCopy)) {
     std::memmove(dst + kShortMemCopy,
                  static_cast<const uint8_t*>(src) + kShortMemCopy,
-                  64 - kShortMemCopy);}
+                 64 - kShortMemCopy);
 #endif
 }