[Bug middle-end/28151] ICE on complex

[steven at gcc dot gnu dot org]

------- Comment #3 from steven at gcc dot gnu dot org  2006-06-24 13:50 -------
We ICE in fold-const.c line 1691 (r114961):

              = const_binop (PLUS_EXPR,
                             const_binop (MULT_EXPR, r2, r2, notrunc),
                             const_binop (MULT_EXPR, i2, i2, notrunc),
                             notrunc);

This happens because const_binop (MULT_EXPR, r2, r2, notrunc) returns
NULL_TREE. The input argument r2 is 0.0:

Breakpoint 3, const_binop (code=RDIV_EXPR, arg1=0x2aaaaaffafc0,
arg2=0x2aaaaaffaf90, notrunc=0)
    at fold-const.c:1691
1691                                 notrunc);
(gdb) step
const_binop (code=MULT_EXPR, arg1=0x2aaaaaf2e5c8, arg2=0x2aaaaaf2e5c8,
notrunc=0)
    at fold-const.c:1554
1554      STRIP_NOPS (arg1);
(gdb) p debug_tree(arg1)
 <real_cst 0x2aaaaaf2e5c8
    type <real_type 0x2aaaaaf45210 real4 SF
        size <integer_cst 0x2aaaaaf29540 constant invariant 32>
        unit size <integer_cst 0x2aaaaaf29060 constant invariant 4>
        align 32 symtab 0 alias set -1 precision 32
        pointer_to_this <pointer_type 0x2aaaaaf45420>>
    constant invariant 0.0>
$17 = void
(gdb) p debug_tree(arg2)
 <real_cst 0x2aaaaaf2e5c8
    type <real_type 0x2aaaaaf45210 real4 SF
        size <integer_cst 0x2aaaaaf29540 constant invariant 32>
        unit size <integer_cst 0x2aaaaaf29060 constant invariant 4>
        align 32 symtab 0 alias set -1 precision 32
        pointer_to_this <pointer_type 0x2aaaaaf45420>>
    constant invariant 0.0>
$18 = void
(gdb)    


-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |steven at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2006-06-24 11:37:02         |2006-06-24 13:50:09
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28151