[Bug dynamic-link/19178] New: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA conflict

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19178

            Bug ID: 19178
           Summary: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA conflict
           Product: glibc
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

sysdeps/generic/ldsodefs.h has

#define ELF_RTYPE_CLASS_PLT 1
#ifndef DL_NO_COPY_RELOCS
# define ELF_RTYPE_CLASS_COPY 2
#else
# define ELF_RTYPE_CLASS_COPY 0
#endif
/* If DL_EXTERN_PROTECTED_DATA is defined, address of protected data
   defined in the shared library may be external, i.e., due to copy
   relocation.   */
#ifdef DL_EXTERN_PROTECTED_DATA
# define ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA 4
#else
# define ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA 0
#endif

and _dl_debug_bindings in elf/dl-lookup.c has

      if (value->s)
        {
          if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info)
                                == STT_TLS))
            type_class = 4;
          else if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info)
                                     == STT_GNU_IFUNC))
            type_class |= 8;
        }

      if (conflict
          || GLRO(dl_trace_prelink_map) == undef_map
          || GLRO(dl_trace_prelink_map) == NULL
          || type_class >= 4)
        {

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