Fix c++ and mac compile errors

http_parser.c

@@ -269,8 +269,8 @@ size_t http_parser_execute (http_parser *parser,
   const char *p = data, *pe;
   ssize_t to_read;
 
-  enum state state = parser->state;
-  enum header_states header_state = parser->header_state;
+  enum state state = (enum state) parser->state;
+  enum header_states header_state = (enum header_states) parser->header_state;
   size_t index = parser->index;
   size_t nread = parser->nread;
 
@@ -462,7 +462,7 @@ size_t http_parser_execute (http_parser *parser,
 
         if (ch < 'A' || 'Z' < ch) goto error;
 
-        parser->method = 0;
+        parser->method = (enum http_method) 0;
         index = 0;
         parser->buffer[0] = ch;
         state = s_req_method;

test.c

@@ -950,7 +950,7 @@ print_error (const char *raw, size_t error_location)
   for (j = 0; j < error_location_line; j++) {
     fputc(' ', stderr);
   }
-  fprintf(stderr, "^\n\nerror location: %d\n", error_location);
+  fprintf(stderr, "^\n\nerror location: %lu\n", error_location);
 }
 
 
@@ -1142,9 +1142,9 @@ test_scan (const struct message *r1, const struct message *r2, const struct mess
 
 error:
   fprintf(stderr, "i=%d  j=%d\n", i, j);
-  fprintf(stderr, "buf1 (%d) %s\n\n", buf1_len, buf1);
-  fprintf(stderr, "buf2 (%d) %s\n\n", buf2_len , buf2);
-  fprintf(stderr, "buf3 (%d) %s\n", buf3_len, buf3);
+  fprintf(stderr, "buf1 (%lu) %s\n\n", buf1_len, buf1);
+  fprintf(stderr, "buf2 (%lu) %s\n\n", buf2_len , buf2);
+  fprintf(stderr, "buf3 (%lu) %s\n", buf3_len, buf3);
   exit(1);
 }
 
@@ -1156,7 +1156,7 @@ main (void)
   int request_count;
   int response_count;
 
-  printf("sizeof(http_parser) = %d\n", sizeof(http_parser));
+  printf("sizeof(http_parser) = %lu\n", sizeof(http_parser));
 
   for (request_count = 0; requests[request_count].name; request_count++);
   for (response_count = 0; responses[response_count].name; response_count++);