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digitalmars.D.bugs - [Issue 4197] New: __error iso assert failure in struct function in/out statement

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197

           Summary: __error iso assert failure in struct function in/out
                    statement
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: strtr despam.it



module main;

const S S1 = S();

struct S 
{
  static S func( S s_ )
  in{ assert(false,random); }
  out(result){ assert(false,random); }
  body{ return s_; }

  const S S2 = func(S());
}
void main(){}
--

main.d(12): Error: cannot evaluate func((S())) at compile time

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May 16 2010
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197


Justin Spahr-Summers <Justin.SpahrSummers gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Justin.SpahrSummers gmail.c
                   |                            |om



2010-05-16 12:48:17 CDT ---


 module main;
 
 const S S1 = S();
 
 struct S 
 {
   static S func( S s_ )
   in{ assert(false,random); }
   out(result){ assert(false,random); }
   body{ return s_; }
 
   const S S2 = func(S());
 }
 void main(){}
 --

 main.d(12): Error: cannot evaluate func((S())) at compile time


The second argument to assert() - if present - is supposed to be a string
describing the condition. The error message without the second parameter or
with a string there instead is correct.

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May 16 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197


bearophile_hugs eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bearophile_hugs eml.cc



This can be a simplified version of the same problem:


enum Foo F1 = Foo();
struct Foo {
    const Foo F2 = func();
}
Foo func() {
    assert(false, random);
    return Foo();
}
void main() {}

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May 16 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197






 
 The second argument to assert() - if present - is supposed to be a string
 describing the condition. The error message without the second parameter or
 with a string there instead is correct.


I was expecting something like :
Error: cannot implicitly cast "random" of type unknown to string
Or 
Error: "random" not defined

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May 16 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197


Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
                 CC|                            |clugdbug yahoo.com.au
            Version|unspecified                 |D1 & D2
         OS/Version|Windows                     |All
           Severity|normal                      |major



Original title was:
"__error iso assert failure in struct function in/out statement"

A reduced test case shows it is a very general ICE.
*Any* error inside an in() or out() contract in a function that is has its
semantic run through CTFE, has all errors gagged. This can result in a cryptic
error message (as in the original test case), or an ICE. This one is
ICE(glue.c), but I've also seen ICE(toir.c). It fails on both D1 and D2.

const Bug4197 s4197 = Bug4197();

int func4197()
in { undefined; }
body { return 0; }

struct Bug4197 {
  static const int S2 = func4197();
}

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Apr 28 2011
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197


Walter Bright <bugzilla digitalmars.com> changed:

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



00:46:13 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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Sep 14 2011
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4197


Walter Bright <bugzilla digitalmars.com> changed:

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



11:23:10 PDT ---
D1 fix:
https://github.com/D-Programming-Language/dmd/commit/23846aca52ebd21efab36ff32924c5a6cc17c4c0

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Sep 15 2011