[Bug c/16876] New: ICE on testcase with -O3 in gen_lowpart

[Bug c/16876] New: ICE on testcase with -O3 in gen_lowpart

[marcus at jet dot franken dot de]

On AMD64, PPC, PPC64, i386: 
 
gcc -O3 -c parse_opts.i 
parse_opts.i: In function `f': 
parse_opts.i:11: internal compiler error: in gen_lowpart, at emit-rtl.c:1436 
 
The code is invalid (a bit), but it should not crash. 
 
reproduced with mainline from some days ago, 3.3-hammer branch, 3.4 branch 
too.

-- 
           Summary: ICE on testcase with -O3 in gen_lowpart
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marcus at jet dot franken dot de
                CC: gcc-bugs at gcc dot gnu dot org,matz at suse dot de
 GCC build triplet: all
  GCC host triplet: all
GCC target triplet: all


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0 Regression] ICE on testcase with -O3 in gen_lowpart

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-02 15:52 -------
: Search converges between 2001-11-11-trunk (#45) and 2001-11-18-trunk (#46).


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2004-08-04 15:41:29         |2004-11-02 15:52:49
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0 Regression] ICE on testcase with -O3 in gen_lowpart

[uros at kss-loka dot si]

------- Additional Comments From uros at kss-loka dot si  2005-02-22 10:49 -------
The problem in mainline is that 'tree type' of RECORD_TYPE enters fold_convert()
and triggers gcc_unreachable() in line 2003.

However Borland C++ exits with error: "Call to function 'g' with no prototype."
on line where g(0) is called.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0 Regression] ICE on testcase with -O3 in gen_lowpart

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-02-22 13:45 -------
*** Bug 20141 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |stephane dot bosio at
                   |                            |vendeeconcept dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0/4.1 Regression] ICE on testcase with -O3 in gen_lowpart

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-03-29 14:04 -------
*** Bug 20680 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |a_gilotra at yahoo dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0/4.1 Regression] ICE on testcase with -O3 in gen_lowpart

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-03-29 14:58 -------
See also my notes <http://gcc.gnu.org/ml/gcc-patches/2004-10/msg00772.html> on
what should receive warnings (possibly compiled into aborts), what should
receive errors and how c_convert_parm_for_inlining (a) is too late for such
diagnostics and (b) fails actually to carry out the conversion or diagnostics
in certain cases.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jsm28 at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.3/3.4/4.0/4.1 Regression] ICE on testcase with -O3 in gen_lowpart

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.0                       |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.4/4.0/4.1 Regression] ICE on testcase with -O3 in gen_lowpart

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.1                       |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876

[Bug tree-optimization/16876] [3.4/4.0/4.1 Regression] ICE on testcase with -O3 in gen_lowpart

[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=16876