[Bug debug/78112] [7 regression] invalid DWARF generated by the compiler: DIE has multiple AT_inline attributes

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78112

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 39923
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39923&action=edit
pr78112.ii

Reduced testcase, on x86_64-linux with -g -dA one can see on a single DIE (so
it isn't just DW_AT_inline, but also DW_AT_object_pointer):
        .uleb128 0x22   # (DIE (0x4ab) DW_TAG_subprogram)
        .long   0x184   # DW_AT_specification
        .byte   0       # DW_AT_inline
        .long   0x4be   # DW_AT_object_pointer
        .byte   0       # DW_AT_inline
        .long   0x4be   # DW_AT_object_pointer
        .long   0x55f   # DW_AT_sibling
The DW_AT_specification for this is:
        .uleb128 0xb    # (DIE (0x184) DW_TAG_subprogram)
                        # DW_AT_external
        .long   .LASF26 # DW_AT_name: "_Hashtable"
        .byte   0x1     # DW_AT_decl_file (pr78112.ii)
        .byte   0x7f    # DW_AT_decl_line
        .long   .LASF28 # DW_AT_linkage_name:
"_ZNSt10_HashtableIiSt4pairIKiiE41Trans_NS___gnu_test_propagating_allocatorIiSaIiEENSt8__detail10_Select1stEiiNS6_18_Mod_range_hashingENS6_20_Default_ranged_hashENS6_20_Prime_rehash_policyENS6_17_Hashtable_traitsEEC4ERKSC_"
                        # DW_AT_declaration
        .long   0x197   # DW_AT_object_pointer
        .long   0x1a2   # DW_AT_sibling