[Bug debug/14900] New: [3.4/3.5 Regression] ICE in loc_descriptor_from_tree (fix_trunc_expr)

[pinskia at gcc dot gnu dot org]

Since fix_trunc_expr is not handled we get an ICE.
int main() {
  double d = 1.0;
  char x[(int) d];
  return 0;
}

Here is the tree which is aborting at this point:
<fix_trunc_expr 0x400da76c
    type <integer_type 0x400505e8 int asm_written SI
        size <integer_cst 0x4004e21c constant 32>
        unit size <integer_cst 0x4004e2a8 constant 4>
        align 32 symtab 1074991232 alias set -1 precision 32 min <integer_cst 0x4004e280 
-2147483648> max <integer_cst 0x4004e294 2147483647>
        pointer_to_this <pointer_type 0x4005c0d8>>

    arg 0 <var_decl 0x4012b0d8 d
        type <real_type 0x4005be58 double asm_written DF
            size <integer_cst 0x4004e5b4 constant 64>
            unit size <integer_cst 0x4004e938 constant 8>
            align 64 symtab 1074991488 alias set -1 precision 64
            pointer_to_this <pointer_type 0x4005c000>>
        used tree_1 tree_2 DF file pr14492.cc line 2 size <integer_cst 0x4004e5b4 64> unit size 
<integer_cst 0x4004e938 8>
        align 64 context <function_decl 0x40127d80 main> initial <real_cst 0x400cfde0 1.0e+0>
        (mem/i:DF (plus:SI (reg/f:SI 20 frame)
        (const_int -8 [0xfffffff8])) [0 d+0 S8 A64])
        chain <var_decl 0x4012b21c x type <array_type 0x4012b1b0>
            tree_1 BLK file pr14492.cc line 3
            size <mult_expr 0x4005d1f8 type <integer_type 0x4005ba20 bit_size_type>
                side-effects
                arg 0 <non_lvalue_expr 0x400da884 type <integer_type 0x4005ba20 bit_size_type>
                    side-effects readonly
                    arg 0 <nop_expr 0x400da834 type <integer_type 0x4005ba20 bit_size_type>
                        side-effects readonly
                        arg 0 <non_lvalue_expr 0x400da820 type <integer_type 0x4005b9b4 unsigned int>
                            side-effects readonly arg 0 <nop_expr 0x400da80c>>>>
                arg 1 <integer_cst 0x4004ea8c constant 8>>
            unit size <non_lvalue_expr 0x400da8d4 type <integer_type 0x4005b9b4 unsigned int>
                side-effects readonly
                arg 0 <nop_expr 0x400da8c0 type <integer_type 0x4005b9b4 unsigned int>
                    side-effects readonly
                    arg 0 <save_expr 0x4004c220 type <integer_type 0x4005baf8>
                        side-effects readonly asm_written used noplaceholder
                        arg 0 <nop_expr 0x400da7a8 type <integer_type 0x4005baf8>
                            arg 0 <fix_trunc_expr 0x400da76c>> arg 1 <function_decl 0x40127d80 main>
                        rtl 2 (reg:SI 0 ax [72])
>>>
            align 32 context <function_decl 0x40127d80 main>
            (mem/s:BLK (reg:SI 83) [0 x+0 A8])>>>

-- 
           Summary: [3.4/3.5 Regression] ICE in loc_descriptor_from_tree
                    (fix_trunc_expr)
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: critical
          Priority: P2
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14900