[Issue 19880] New: delegate using lazy parameter breaks @safe

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19880

          Issue ID: 19880
           Summary: delegate using lazy parameter breaks @safe
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Keywords: safe
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: simen.kjaras at gmail.com

@safe: 
int delegate() dg;

void fun2(lazy int n) {
    dg = () => n;
}

void fun1() {
    int i = 0;
    fun2(i);
}

unittest {
    fun1();
    assert(dg() == 0);
}

The above assert fails, as i goes out of scope when fun1 returns, but is still
referenced by dg.

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