[Issue 18128] New: [scope] escaping reference to class allocated on the stack

d-bugmail at puremagic.com d-bugmail at puremagic.com
Mon Dec 25 20:24:16 UTC 2017


https://issues.dlang.org/show_bug.cgi?id=18128

          Issue ID: 18128
           Summary: [scope] escaping reference to class allocated on the
                    stack
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: bugzilla at digitalmars.com

class A {
    int i;
}

void inc(A a) @safe {
    a.i += 1; // Line 6
}

auto makeA() @safe {  // Line 9
    import std.algorithm : move;
    scope a = new A(); // allocates object on the stack instead of the heap
    return move(a); // should give an error
}

void main() @safe {
    auto a = makeA();
    a.inc(); // Line 17
}

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