• d-bugmail puremagic.com (24/24) Nov 22 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (9/9) Nov 23 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (12/12) Nov 23 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (10/10) Nov 23 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (17/17) Dec 04 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (11/11) Dec 05 2013 https://d.puremagic.com/issues/show_bug.cgi?id=11583
• d-bugmail puremagic.com (10/10) Feb 23 2014 https://d.puremagic.com/issues/show_bug.cgi?id=11583

d-bugmail puremagic.com writes:

https://d.puremagic.com/issues/show_bug.cgi?id=11583

           Summary: bigint bug
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: yuri.musashi.miwa.tamura gmail.com



2013-11-22 19:48:32 PST ---
import std.stdio;
import std.bigint;

void main() {
    BigInt x = 0;
    writeln(x > 0);
}

=> true

This seems new in v2.064.

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d-bugmail puremagic.com writes:

https://d.puremagic.com/issues/show_bug.cgi?id=11583


yebblies <yebblies gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yebblies gmail.com
           Severity|normal                      |regression


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d-bugmail puremagic.com writes:

https://d.puremagic.com/issues/show_bug.cgi?id=11583


hsteoh quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hsteoh quickfur.ath.cx



This is caused by the changes in commit
202d182152575db1d744ed5ee89b05a39e5a807b. BigUint.opCmp(Tulong y) returns the
wrong result for comparison with 0.

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d-bugmail puremagic.com writes:

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hsteoh quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull



https://github.com/D-Programming-Language/phobos/pull/1715

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d-bugmail puremagic.com writes:

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Commits pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/8f132413dd17114ab8a1f1bb1589098602f785a6
Fix issue 11583.

The problem is that the assumption that the first word of a BigUint is
always non-zero is false when BigUint == biguintcore.ZERO, which is
defined to be [0]. So we need to check for that case in
BigUint.opCmp(ulong).

Also, crash-proof BigUint's invariant, since it would cause an
out-of-bounds array access if a bug causes data.length==0.

https://github.com/D-Programming-Language/phobos/commit/5ef0d3428fd8fd1f11d5469f1330ffa963018e50


Fix issue 11583.

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hsteoh quickfur.ath.cx changed:

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



Verified fixed in git HEAD.

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safety0ff.bugz <safety0ff.bugz gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |killebrew.daniel gmail.com



17:43:49 PST ---
*** Issue 12234 has been marked as a duplicate of this issue. ***

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