foo.cc: In function 'int main()':
foo.cc:46:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   46 |  for (int s=1;s<=n1;s++)
      |  ^~~
foo.cc:48:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   48 |   a[] += x;
      |   ^
foo.cc:48:5: error: expected primary-expression before ']' token
   48 |   a[] += x;
      |     ^
foo.cc:49:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   49 |  for (int j=1;j<=n2;j++)
      |  ^~~
foo.cc:51:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   51 |   b[] += x;
      |   ^
foo.cc:51:5: error: expected primary-expression before ']' token
   51 |   b[] += x;
      |     ^

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