[Bug debug/69077] [6 Regression] omnetpp ICEs with -flto -g

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69077

kugan at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kugan at gcc dot gnu.org

--- Comment #8 from kugan at gcc dot gnu.org ---
For  decl "mean" in t2.cc, in:
void sf::finish() {
      recordScalar(eedStats.mean());
}

Qe have: 
LOCATION_LOCUS (BLOCK_SOURCE_LOCATION (block)) is UNKNOWN_LOCATION;

As per the comments in tree.h, BLOCK_SOURCE_LOCATION should be set for inlined
function (function "mean" here).

debug_tree (decl for "mean") is:

 <function_decl 0x7fe2c9a3dd00 mean
    type <method_type 0x7fe2c9a43bd0
        type <real_type 0x7fe2c98f6498 double asm_written DF
            size <integer_cst 0x7fe2c98e1a08 constant 64>
            unit size <integer_cst 0x7fe2c98e1a20 constant 8>
            align 64 symtab -912663504 alias set -1 canonical type
0x7fe2c98f6498 precision 64
            pointer_to_this <pointer_type 0x7fe2c98f6690>>
        SI
        size <integer_cst 0x7fe2c98e1c48 constant 32>
        unit size <integer_cst 0x7fe2c98e1c60 constant 4>
        align 32 symtab 0 alias set -1 structural equality method basetype
<record_type 0x7fe2c9a382a0 cStdDev>
        arg-types <tree_list 0x7fe2c9a3b780 value <pointer_type 0x7fe2c9a43b28>
            chain <tree_list 0x7fe2c98ef9d8 value <void_type 0x7fe2c98f6000
void>>>
        pointer_to_this <pointer_type 0x7fe2c9a47348>>
    addressable asm_written nothrow public static weak function-specific-target
function-specific-opt autoinline virtual DI file t.h line 4 col 22 align 32
context <record_type 0x7fe2c9a382a0 cStdDev> initial <error_mark
0x7fe2c98e19f0>
    (mem:DI (symbol_ref/i:DI ("_ZNK7cStdDev4meanEv") [flags 0x3] <function_decl
0x7fe2c9a3dd00 mean>) [0  S8 A8])>

not sure why ?