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digitalmars.D.bugs - [Issue 6351] New: Regression(2.054) Segfault: Vararg delegate as template param

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6351

           Summary: Regression(2.054) Segfault: Vararg delegate as
                    template param
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: cbkbbejeap mailinator.com


--- Comment #0 from Nick Sabalausky <cbkbbejeap mailinator.com> 2011-07-19
20:01:57 PDT ---
This crashes the compiler:

void foo(alias dg)()
{
    dg();
}
alias foo!( (int[] a...){} ) bar;

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6351


Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug yahoo.com.au


--- Comment #1 from Don <clugdbug yahoo.com.au> 2011-08-24 04:48:25 PDT ---
Another test case, involving a variable instead of a delegate literal:

void bug6351(alias dg)()
{
    dg();
}

void delegate(int[] a...) deleg6351 = (int[] a...){};

alias bug6351!(deleg6351) baz6531;

The problem is in expression.c, functionParameters().
The parameter 'fd' is NULL, but the function calls fd->isSafe().
In fact, 'fd' will be null for any kind of call involving a variable -- TOKvar,
TOKdotvar, TOKindex, TOKstar, TOKcall, TOKdotti.

For the delegate literal case, we can determine 'fd' in expression.c 7618. This
will allow  safe inference for delegate literals as parameters.
For the variable case, the function type should be used instead of fd.

Lcheckargs:
    assert(tf->ty == Tfunction);

+    if (!f && e1->op == TOKfunction)
+    {
+        f = ((FuncExp *)e1)->fd;
+    }

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Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |robert octarineparrot.com


--- Comment #2 from Don <clugdbug yahoo.com.au> 2011-08-24 04:50:35 PDT ---
*** Issue 6341 has been marked as a duplicate of this issue. ***

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--- Comment #3 from Don <clugdbug yahoo.com.au> 2011-08-24 11:38:14 PDT ---
https://github.com/D-Programming-Language/dmd/pull/330

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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> 2011-08-24
13:40:15 PDT ---
https://github.com/D-Programming-Language/dmd/commit/b9ee455e4e8c129b429d8e22fd4f6d15885274fb

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