/in/foo.cc: In function 'void read(int&)':
/in/foo.cc:21:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
     while ((c = getchar()) < '0' || c > '9'); x = c - '0';
     ^~~~~
/in/foo.cc:21:47: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
     while ((c = getchar()) < '0' || c > '9'); x = c - '0';
                                               ^