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digitalmars.D.bugs - [Issue 7412] New: void16 assignment shows interesting errors

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7412

           Summary: void16 assignment shows interesting errors
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: turkeyman gmail.com



This line produces the following error:
  void16 x = 1.0;

$ /opt/gdc/bin/gdc test.d -O2 -S -msse2
Assertion failed: tob->flags & TFLAGSfloating, file ../../gcc/d/dmd2/mtype.c,
line 3290

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
cc1d.exe: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bitbucket.org/goshawk/gdc/issues> for instructions.


This is possibly not the most informative message :)
Also, this line:
  void16 x = 1;

compiles, performs effectively:
  byte16 = 1;

I wonder if you should be able to assign an integer to void16 at all. Assigning
the float fails with an interesting message, assigning an integer should
probably fail too?
I think void16 should only be for blind casting between vector types, or
storage of un-typed values.

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next sibling parent d-bugmail puremagic.com writes:
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Walter Bright <bugzilla digitalmars.com> changed:

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



22:13:10 PDT ---
With DMD, the following program:

----
  import core.simd;
  void16 x = 1.0;
----

produces the error message:

Error: cannot implicitly convert expression (1.00000) of type double to
__vector(void[16])

Which I believe is correct. It's possible this is a gdc only error - refile at 

https://bitbucket.org/goshawk/gdc/issues

?

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prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7412






 With DMD, the following program:
 
 ----
   import core.simd;
   void16 x = 1.0;
 ----
 
 produces the error message:
 
 Error: cannot implicitly convert expression (1.00000) of type double to
 __vector(void[16])
 
 Which I believe is correct. It's possible this is a gdc only error - refile at 
 
 https://bitbucket.org/goshawk/gdc/issues
 
 ?


Or it could have been fixed in the last almost-2-years :)
I'll try it again with GDC.

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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Iain Buclaw <ibuclaw ubuntu.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ibuclaw ubuntu.com



An ICE in mtype.c  ->  Front-end issue, not a gdc problem. :o)

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prev sibling parent d-bugmail puremagic.com writes:
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Having a quick test with copies that I've still got lingering around.

This ICE's with v2.060, but not v2.061 or later.

See this commit:
https://github.com/D-Programming-Language/dmd/commit/f018414a1b80805d1ac50889907a254653ceabcf#diff-ffafa03255a57832dd09031af6cb915dL3330


Also, please refile gdc bugs at http://bugzilla.gdcproject.org  :-)

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