[Issue 9831] Error message with failed lambda inference

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=9831



--- Comment #3 from yebblies <yebblies at gmail.com> 2013-11-17 23:09:26 EST ---
(In reply to comment #2)
> 
> So I think this issue is valid, the type inferencer could become a bit smarter
> and compile the first case too. But perhaps this issue should be regarded as an
> Enhancement.

What makes you think the first case is valid?

void main() {
    immutable int c; // immutable local variable
    int function(int x) func;
    func = x => c; // needs context to access c
}

What exactly would you expect to happen?

A similar case:

void main(string[] args) {
    immutable int c = args.length;
    int function(int x) func;
    func = x => c;
}

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