An (A)GPL text editor works, see for example Emacs, as the text created doesn't contain any part of the editor itself. But a compilers emits code which is based

An (A)GPL text editor works, see for example Emacs, as the text created doesn't contain any part of the editor itself. But a compilers emits code which is based on your source and the compiler itself. Also, it usually links against a standard library which would be AGPL. So this makes your created executable AGPL unless there is an explicit excemption, as it is the case with GCC.