An error in QwtScaleDiv::invert

[ars]

It's not a bug (assuming that the inner loop really should use a new loop variable). The inner for loop uses a new instance of variable i. Check the output of the following small program:

#include <iostream>
using namespace std;
 
int main(int , char**)
{
	for (int i=0; i < 5; i++)
	{
		cout << i << " ";
		for(int i=0; i < 3; i++)
			if(i == 0)
				cout << i << endl;
			else
				cout << "  " << i << endl;
	}
}

#include <iostream>
using namespace std;

int main(int , char**)
{
	for (int i=0; i < 5; i++)
	{
		cout << i << " ";
		for(int i=0; i < 3; i++)
			if(i == 0)
				cout << i << endl;
			else
				cout << "  " << i << endl;
	}
}

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But I would also prefer a new name for the inner for loop variable just for code readability.