Bug 5635 – Code inside 'foreach' using opApply cannot modify variable out of its scope in a template function.

The following program should compile: pure bool foo(R=int)(string x) { bool result = false; foreach (dchar d; x) result = true; return result; } void main () { foo("hi"); } But as of v2.052 it raises the errors: x.d(4): Error: pure nested function '__foreachbody3' cannot access mutable data 'result' x.d(9): Error: template instance x.foo!(int) error instantiating If the template parameter (R=int) were removed, the program compiles successfully. (I think this is related to Issue 3316).

Commit pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/17f3b7171dad7bb4d77822a878840191e630cb1c fix Issue 5635 - Code inside 'foreach' using opApply cannot modify variable out of its scope in a template function.