I disagree with this, because there are a lot of fairly benign language extensions that break compatibility in pathological cases. Here's a C example. C90 sup

I disagree with this, because there are a lot of fairly benign language extensions that break compatibility in pathological cases. Here's a C example. C90 supported block comments with /* comment */. C99 added BCPL style comments with // the rest of this line is a comment They were already a common language extension and supported by C++. Here's an example of C90 code that fails to compile under C99 because of // comments. int x = 12; int y = x //* I'm placing a comment here just to be difficult.*/ 3; Should the committee have rejected this change to prevent breaking programs with similar code?