/in/foo.cc: In function 'int main()':
/in/foo.cc:56:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(N=1,L=0;N<max(len1,len2);N<<=1,L++);N<<=1;L++;  
     ^~~
/in/foo.cc:56:45: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     for(N=1,L=0;N<max(len1,len2);N<<=1,L++);N<<=1;L++;  
                                             ^