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digitalmars.D.bugs - [Issue 9057] New: Non-constant expression error in biguintcore

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=9057

           Summary: Non-constant expression error in biguintcore
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: bearophile_hugs eml.cc


--- Comment #0 from bearophile_hugs eml.cc 2012-11-22 14:20:52 PST ---
(This is derived from Issue 8996 )


import std.typecons;
Tuple!T foo(T)(T x) {
    return tuple(x);
}
void main() {
    import std.bigint;
    foo(BigInt(1));
}


DMD 2.061alpha gives:

...\dmd2\src\phobos\std\internal\math\biguintcore.d(92): Error: non-constant
expression ZERO

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Nov 22 2012
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=9057


Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice
            Summary|Non-constant expression     |Regression(Beta): Segfault
                   |error in biguintcore        |or "Non-constant
                   |                            |expression" error with
                   |                            |local import


--- Comment #1 from Don <clugdbug yahoo.com.au> 2012-11-28 00:42:42 PST ---
Reduced test case shows it is related to the local import.
Looks as though semantic isn't being run on the array literal.
In the first case, it segfaults because the array literal type is still NULL.
------------------ 
struct Bug9057(T)
{
    T x;
}

void test9507() {
    import thug;
    Bug9057!(BugInt) xxx;
}
------------------ thug.d, case 1. Segfault
struct BugInt
{
    uint[] data = [0];
}
------------------ thug.d, case 2: "Non-constant expression ZEROX"
struct BugInt
{
    uint[] data = ZEROX;  
}
enum uint [] ZEROX = [0];

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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--- Comment #2 from github-bugzilla puremagic.com 2012-12-10 03:56:00 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/af2c21b58e357a214da2bc1cf959c322f8ad1cd4
fix issue 9057 - Regression(Beta): Segfault or 'Non-constant expression' error
with local import

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prev sibling parent d-bugmail puremagic.com writes:
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Walter Bright <bugzilla digitalmars.com> changed:

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


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