I changed the title of this popular question from:
Is this an g++ optimization bug?
Different floating point result with optimization enabled - compiler bug?
but I am having second thoughts. It is considered good practice to edit a title to better reflect the question, with the goal of producing better search results for those who have the same problem. However, I wonder if the popularity of a question is evidence that its title is working well. Should one be reluctant to change the title of a popular question?