something like

typedef struct {
  int member;
  char member2;
} mystruct;

is enough of a C idiom that I think it would be a nice enahancement that instead of printing something like:

  [C]'function size_t _elf32_xltsize(const Elf_Data*, unsigned int, unsigned int, int)' at 32.xlate\
tof.c:336:1 has some indirect sub-type changes:

    parameter 1 of type 'const Elf_Data*' has sub-type changes:
      in pointed to type 'const Elf_Data':
        in unqualified underlying type 'typedef Elf_Data' at libelf.h:167:1:
          underlying type 'struct __anonymous_struct__' at libelf.h:160:1 changed:
            1 data member deletion:
              'void* __anonymous_struct__::d_buf', at offset 0 (in bits) at libelf.h:161:1

So instead of printing:
              'void* __anonymous_struct__::d_buf', at offset 0 (in bits) at libelf.h:161:1

Print something like:
              'void* TheTypedefedName, at offset 0 (in bits) at libelf.h:161:1