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digitalmars.D.bugs - [Issue 3792] New: Error: non-constant expression in xf.omg.core.LinearAlgebra

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           Summary: Error: non-constant expression in
                    xf.omg.core.LinearAlgebra
           Product: D
           Version: 1.056
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: fawzi gmx.ch


--- Comment #0 from Fawzi Mohamed <fawzi gmx.ch> 2010-02-11 05:08:09 PST ---
The conversions of scalars to Fixed type now fails at compile time.
There are several similar bugs to which it might be connected.

I join a reduced tango and xf independent test case.

Possibly connected to this xf.omg.core.CoordSys (that includes LinearAlgebra)
segfaults.

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--- Comment #1 from Fawzi Mohamed <fawzi gmx.ch> 2010-02-11 06:51:50 PST ---
Created an attachment (id=566)
a testcase that fails

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Matti Niemenmaa <matti.niemenmaa+dbugzilla iki.fi> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |matti.niemenmaa+dbugzilla i
                   |                            |ki.fi


--- Comment #2 from Matti Niemenmaa <matti.niemenmaa+dbugzilla iki.fi>
2010-02-11 08:55:10 PST ---
Reduced:

struct S {
    int x;

    template T(int val) {
        const S T = { val };
    }
}

const x = S.T!(0);

// arst.d(9): Error: non-constant expression (S).T

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--- Comment #3 from Fawzi Mohamed <fawzi gmx.ch> 2010-03-08 00:27:59 PST ---
This bug is listed as fixed in 1.057, but while the reduced case by Matti
Niemenmaa is indeed fixed, the original testcase still fails (I am pointing it
out so that it stays open...)

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Walter Bright <bugzilla digitalmars.com> changed:

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


--- Comment #4 from Walter Bright <bugzilla digitalmars.com> 2010-03-08
22:24:37 PST ---
Fixed dmd 1.057

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Fawzi Mohamed <fawzi gmx.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


--- Comment #5 from Fawzi Mohamed <fawzi gmx.ch> 2010-03-09 03:24:39 PST ---
As I wrote in my previous comment, the attached testcase still fails...

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--- Comment #6 from Don <clugdbug yahoo.com.au> 2010-05-31 06:11:36 PDT ---
Reduced test case for the case that still fails. It's the same, except that the
struct member is explicitly named in the struct initializer.

struct S {
    int x;

    template T(int val) {
        const S T = { x: val };
    }
}

const x = S.T!(0);

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--- Comment #7 from Don <clugdbug yahoo.com.au> 2010-06-24 13:55:11 PDT ---
The D2 version of this code never compiled without error.

struct S {
    int x;
    template T(int val) {
        enum S T = { x: val };
    }
}
const x = S.T!(0);

It fails to compile because init.c, StructInitializer::toExpression() returns
NULL if any of the fields have names ( if (field.data[i]) goto Lno; )
And this is just because it's never been implemented.

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--- Comment #8 from Walter Bright <bugzilla digitalmars.com> 2011-04-23
15:50:37 PDT ---
D1 fix:
https://github.com/D-Programming-Language/dmd/commit/da0159d02d0e4ecb7ad1afa4bc6da402e677846f

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Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED


--- Comment #9 from Don <clugdbug yahoo.com.au> 2011-05-30 07:58:57 PDT ---
Fixed DMD2.053

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