foo.cc: In function 'int getm(std::__cxx11::list<int>, int)':
foo.cc:7:13: warning: unused variable 'tt' [-Wunused-variable]
    7 |         int tt=t;
      |             ^~
foo.cc:24:10: warning: control reaches end of non-void function [-Wreturn-type]
   24 |         t++;
      |         ~^~

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