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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/59399] ICE in expand_expr_real_1 with -m64 -fsanitize=signed-integer-overflow
Date: Thu, 05 Dec 2013 19:27:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59399

--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
More hopefully useful gdb output:

(gdb) pr decl_rtl
(reg:DI 123 [ D.2805+-4 ])

(gdb) ptree exp
 <var_decl 0xfffafe31a20 D.2805
    type <integer_type 0xfffafec0690 int sizes-gimplified public SI
        size <integer_cst 0xfffafe027c0 constant 32>
        unit size <integer_cst 0xfffafe027e0 constant 4>
        align 32 symtab 0 alias set -1 canonical type 0xfffafec0690 precision
32 min <integer_cst 0xfffafe02760 -2147483648> max <integer_cst 0xfffafe02780
2147483647>
        pointer_to_this <pointer_type 0xfffafec16f8>>
    used ignored SI file bug.ii line 2 col 1 size <integer_cst 0xfffafe027c0
32> unit size <integer_cst 0xfffafe027e0 4>
    align 32 context <function_decl 0xfffb0068c00 foo>
    (reg:DI 123 [ D.2805+-4 ])>

(gdb) p DECL_MODE (exp)
$8 = SImode

(gdb) ptree ssa_name
 <ssa_name 0xfffafea0708
    type <integer_type 0xfffafec0690 int sizes-gimplified public SI
        size <integer_cst 0xfffafe027c0 constant 32>
        unit size <integer_cst 0xfffafe027e0 constant 4>
        align 32 symtab 0 alias set -1 canonical type 0xfffafec0690 precision
32 min <integer_cst 0xfffafe02760 -2147483648> max <integer_cst 0xfffafe02780
2147483647>
        pointer_to_this <pointer_type 0xfffafec16f8>>
    visited var <var_decl 0xfffafe31a20 D.2805>def_stmt _3 = UBSAN_CHECK_ADD
(j_1(D), i_2(D));

    version 3>