foo.cc: In function 'node* input(int)':
foo.cc:43:16: warning: 'list' may be used uninitialized [-Wmaybe-uninitialized]
   43 |         return list;
      |                ^~~~
foo.cc:27:22: note: 'list' was declared here
   27 |         struct node *list;
      |                      ^~~~

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