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digitalmars.D.bugs - [Issue 8374] New: One missed array literal interpretation as int[2]

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8374

           Summary: One missed array literal interpretation as int[2]
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: bearophile_hugs eml.cc


--- Comment #0 from bearophile_hugs eml.cc 2012-07-10 15:18:42 PDT ---
I am not sure, but I think this code is correct:


struct Foo {
    int[2] bar;
}
const(int[2]) spam() {
    const Foo* x;
    return true ? x.bar : [10, 20];
}
void main() {}


But DMD 2.060alpha gives:

test.d(6): Error: cannot implicitly convert expression
(cast(const(int)[])(*x).bar) of type const(int)[] to const(int[2u])

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8374


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |INVALID


--- Comment #1 from Walter Bright <bugzilla digitalmars.com> 2012-07-10
16:36:56 PDT ---
The type of

   [1,2]

is int[], not int[2].

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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timon.gehr gmx.ch changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |timon.gehr gmx.ch
         Resolution|INVALID                     |


--- Comment #2 from timon.gehr gmx.ch 2012-07-10 16:56:28 PDT ---
The [1,2] / [10,20] literal implicitly converts to int[2].
It is similar to the following:

struct Foo{
    short bar;
}

short spam() {
    const Foo* x;
    return true ? x.bar : 1;
}

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--- Comment #3 from bearophile_hugs eml.cc 2012-07-10 17:49:56 PDT ---
(In reply to comment #1)
 The type of
 
    [1,2]
 
 is int[], not int[2].

Usually in my bug reports I add some cases where the code works, to avoid troubles like this one. This works: struct Foo { int[2] bar; } int[2] spam() { Foo* x; return true ? x.bar : [10, 20]; } void main() {} This too works: struct Foo { int[2] bar; } const(int[2]) spam() { const Foo* x; const(int[2]) r = true ? x.bar : [10, 20]; return r; } void main() {} -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Jul 10 2012
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8374


yebblies <yebblies gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yebblies gmail.com


--- Comment #4 from yebblies <yebblies gmail.com> 2013-01-17 02:22:44 EST ---
Is this the same as issue 8277?

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Jan 16 2013