foo.cc: In function 'int main()':
foo.cc:9:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    9 |  for(int i=a;i<=b;i++);
      |  ^~~
foo.cc:10:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   10 |   sum+=i;
      |   ^~~
foo.cc:10:8: error: 'i' was not declared in this scope
   10 |   sum+=i;
      |        ^

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