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September 13, 2011
[Issue 6661] New: Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661

          Summary: Templates instantiated only through is(typeof())
                   shouldn't cause errors
          Product: D
          Version: D1 & D2
         Platform: Other
       OS/Version: Windows
           Status: NEW
         Severity: normal
         Priority: P2
        Component: DMD
       AssignedTo: nobody@puremagic.com
       ReportedBy: clugdbug@yahoo.com.au


--- Comment #0 from Don <clugdbug@yahoo.com.au> 2011-09-13 02:44:40 PDT ---
The template blaz!int cannot be instantiated without errors, because it
contains an assignment of a string literal to int. But, since it is not
actually instantiated, it shouldn't cause a compile error.

template blaz(Q)
{
   int qutz(Q y)
   {
       Q q = "abc";
       return 67;
   }
   static assert(qutz(13).sizeof!=299);
   const Q blaz = 6;
}

static assert(is(typeof(blaz!(int).blaz)));

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September 14, 2011
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661


Walter Bright <bugzilla@digitalmars.com> changed:

          What    |Removed                     |Added
----------------------------------------------------------------------------
                CC|                            |bugzilla@digitalmars.com


--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> 2011-09-14 00:45:10 PDT ---
D2 fix:
https://github.com/D-Programming-Language/dmd/commit/0a927f258e89f92f280c0e855a93ceb05e34a260

Partial D1 fix:
https://github.com/D-Programming-Language/dmd/commit/31d6751de3a877c72055a2096a9a9c4a9a25ec9b

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September 15, 2011
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661


Walter Bright <bugzilla@digitalmars.com> changed:

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


--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> 2011-09-15 11:24:07 PDT ---
D1 fix:
https://github.com/D-Programming-Language/dmd/commit/23846aca52ebd21efab36ff32924c5a6cc17c4c0

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September 15, 2011
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661


Denis <verylonglogin.reg@gmail.com> changed:

          What    |Removed                     |Added
----------------------------------------------------------------------------
            Status|RESOLVED                    |REOPENED
                CC|                            |verylonglogin.reg@gmail.com
        Resolution|FIXED                       |


--- Comment #3 from Denis <verylonglogin.reg@gmail.com> 2011-09-15 13:13:15 PDT ---
Still in dmd-1.x branch (tested after fe308a1).
Compiler fails with exit code 1 and no error messages.

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October 17, 2011
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661


Walter Bright <bugzilla@digitalmars.com> changed:

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


--- Comment #4 from Walter Bright <bugzilla@digitalmars.com> 2011-10-16 22:51:56 PDT ---
https://github.com/D-Programming-Language/dmd/commit/7654a72e61b1ae322b9f55bbff97ea1c36db4622

https://github.com/D-Programming-Language/dmd/commit/fd5399a4899da09d7a35e2258a5fa92139e4d292

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March 21, 2012
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661



--- Comment #5 from Don <clugdbug@yahoo.com.au> 2012-03-21 12:51:44 PDT ---
*** Issue 6262 has been marked as a duplicate of this issue. ***

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January 24, 2013
[Issue 6661] Templates instantiated only through is(typeof()) shouldn't cause errors
http://d.puremagic.com/issues/show_bug.cgi?id=6661



--- Comment #6 from github-bugzilla@puremagic.com 2013-01-24 14:27:48 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/e9142862884625d0db801bbf1f05ad9487aae28b
fix test result for issue 6661

Inherently, when you try to instantiate a template, the whole template
body correctness should be checked at the same time.

In this case, bug6661!(int).qutz is a normal function declared inside
template, so it should be instantiated at the same time with bug6661!(int).
Now, the inner `static assert(qutz(13).sizeof!=299);` runs the semantic3
of qutz by calling it. So the module level static assertion fails _correctly_.

But, `is(typeof(bug6661x!(int)))` still returns true incorrectly.
I think it is yet another known issue in current dmd implementation.

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