http://d.puremagic.com/issues/show_bug.cgi?id=5754

           Summary: 'glue.c' assertion failure with map(filter)
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2011-03-19 07:22:11 PDT ---
import std.algorithm;
void main() {
    int[] a = [1];
    map!((int i){ return filter!((int j){ return i; })(a); })(a);
}


With DMD 2.052 gives:
Assertion failure: '!vthis->csym' on line 703 in file 'glue.c'


Equivalent Python 2.6 code:

>>> a = [1]
>>> map(lambda i: filter(lambda j: i, a), a)
[[1]]

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kennytm@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kennytm@gmail.com


--- Comment #1 from kennytm@gmail.com 2011-03-19 13:23:04 PDT ---
Any chance it is the same as issue 4129?

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kennytm@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|Windows                     |All


--- Comment #2 from kennytm@gmail.com 2011-03-19 13:58:32 PDT ---
Reduced test case (I think):

----------------------------------


void x(alias pred)() {
    pred();
}

void main() {
    x!((){
        int i;  // declare in outer scope
        x!((){
            cast(void) i;   // access in inner scope
        });
    });
}

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ICE('glue.c'): using nested |ICE(glue.c): using nested
                   |delegate literal as         |delegate literal as
                   |template alias parameter    |template alias parameter


--- Comment #3 from Don <clugdbug@yahoo.com.au> 2011-09-07 15:24:09 PDT ---
See also bug 2962.

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SomeDude <lovelydear@mailmetrash.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lovelydear@mailmetrash.com


--- Comment #4 from SomeDude <lovelydear@mailmetrash.com> 2012-04-20 10:15:31 PDT ---
Compiles and runs with 2.059 Win32

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--- Comment #5 from SomeDude <lovelydear@mailmetrash.com> 2012-04-20 10:17:15 PDT ---
I don't have the D1 compiler installed but it would be worth trying if issue 2962 is resolved as well.

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bearophile_hugs@eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |regression


--- Comment #6 from bearophile_hugs@eml.cc 2012-12-14 16:23:59 PST ---
(In reply to comment #4)
> Compiles and runs with 2.059 Win32

Yes, both cases now compile. But I have found a way to trigger the same error.

First module, named "module1.d":


import std.stdio;
import module2;
void main() {}



Second module, named "module2.d":


import std.algorithm: reduce;
struct Foo {
    string bar() {
        auto spam = (string s, int) => "";
        return reduce!spam("", [1]);
    }
}



It generates, dmd 2.061alpha:

Assertion failure: '!vthis->csym' on line 787 in file 'glue.c'

Since you say this used to work before, it's now a regression.

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bearophile_hugs@eml.cc changed:

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


--- Comment #7 from bearophile_hugs@eml.cc 2012-12-14 16:26:50 PST ---
Sorry, I guess it's a different bug, so I close this down and open another one. So ignore comment 6 please.

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