fix: sanitizer checks fix (iteration 1)

src/compiler/fzl_reader.c

@@ -204,31 +204,31 @@ fzl_token_t *parse_number(fzl_reader_t *reader)
 // Add single-char token
 fzl_token_t *add_single(fzl_reader_t *reader, fzl_toktype_t type)
 {
-  size_t p = move(reader, 1);
   fzl_file_loc l;
-  bool ok = fzl_linked_getpos(reader->linked, p, &l);
+  bool ok = fzl_linked_getpos(reader->linked, reader->position, &l);
   if (!ok)
   {
     snprintf(last_err, sizeof(last_err), "failed to locate line:col");
     return NULL;
   }
 
-  return fzl_mktoken(type, l.line, l.col, NULL, 0, l.filename);
+  move(reader, 1);
+  return fzl_mktoken(type, l.line, l.col, "", 0, l.filename);
 }
 
 // Add double-char token
 fzl_token_t *add_double(fzl_reader_t *reader, fzl_toktype_t type)
 {
-  size_t p = move(reader, 2);
   fzl_file_loc l;
-  bool ok = fzl_linked_getpos(reader->linked, p, &l);
+  bool ok = fzl_linked_getpos(reader->linked, reader->position, &l);
   if (!ok)
   {
     snprintf(last_err, sizeof(last_err), "failed to locate line:col");
     return NULL;
   }
 
-  return fzl_mktoken(type, l.line, l.col, NULL, 0, l.filename);
+  move(reader, 2);
+  return fzl_mktoken(type, l.line, l.col, "", 0, l.filename);
 }
 
 // Skip symbols until '\n' or EOF
@@ -353,6 +353,7 @@ int fzl_read(fzl_reader_t *reader)
     }
 
     fzl_reader_ll_t *tok_node = malloc(sizeof(fzl_reader_ll_t));
+    tok_node->next            = NULL;
     tok_node->token           = token;
 
     reader->last->next = tok_node;