[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-10-27 Thread pinskia at gcc dot gnu dot org 


--- Comment #9 from pinskia at gcc dot gnu dot org  2005-10-27 21:15 ---
This is a combination of a GCC extension (of cast to union) and a C99 feature
(subscripting a non-lvalue array) so this is valid code (but undefined code)
even though it looks so weird.

Anyways I have a patch which I am testing.


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pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
   |dot org |org
 Status|NEW |ASSIGNED
   Keywords|accepts-invalid |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155

[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-10-27 Thread pinskia at gcc dot gnu dot org 


--- Comment #8 from pinskia at gcc dot gnu dot org  2005-10-27 20:01 ---
I might look into this soon.


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pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||pinskia at gcc dot gnu dot
   ||org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155

[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-09-27 Thread mmitchel at gcc dot gnu dot org 


-- 
   What|Removed |Added

   Target Milestone|4.0.2   |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155

[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-09-16 Thread janis at gcc dot gnu dot org 

--- Additional Comments From janis at gcc dot gnu dot org  2005-09-16 20:22 
---
The testcase from comment #5 ICEs starting with this patch from kenner:

  http://gcc.gnu.org/ml/gcc-cvs/2004-06/msg00881.html

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   What|Removed |Added

 CC||kenner at gcc dot gnu dot
   ||org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155

[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-08-08 Thread pinskia at gcc dot gnu dot org 

--- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-08 
18:26 ---
: Search converges between 2004-06-20-trunk (#469) and 2004-06-22-trunk (#470).


Hmm, this was not introduced by the tree-ssa merge weird.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155

[Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast

2005-08-04 Thread rguenth at gcc dot gnu dot org 

--- Additional Comments From rguenth at gcc dot gnu dot org  2005-08-04 
09:20 ---
It's an lvalue-cast, which we no longer support as an extension.  So it's ICE on
invalid and a frontend bug.  The C++ frontend spits out the interesting error

pr23155.c: In function ‘void foo5(int)’:
pr23155.c:7: error: no matching function for call to ‘vx::vx(int&)‘
pr23155.c:1: note: candidates are: vx::vx()
pr23155.c:1: note: vx::vx(const vx&)

The following get's rejected with what should be done with the original
testcase, too:

union vx {short f[8]; int v;};
int vec;

void bar(short *);

void
foo5 (int vec)
{
  bar(((union vx) vec).f);
}

pr23155.c: In function ‘foo5’:
pr23155.c:10: error: invalid use of non-lvalue array


-- 
   What|Removed |Added

  Component|middle-end  |c
   Keywords|ice-on-valid-code   |accepts-invalid


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155