4004 dis(1) can't deal with extended sections

*** 444,453 ****
--- 444,454 ----
          }
  
          current = tgt;
          cmd = ELF_C_READ;
          while ((elf = elf_begin(tgt->dt_fd, cmd, tgt->dt_elf_root)) != NULL) {
+                 size_t shnum = 0;
  
                  if (elf_kind(tgt->dt_elf_root) == ELF_K_AR &&
                      (arhdr = elf_getarhdr(elf)) == NULL) {
                          warn("%s: malformed archive", file);
                          dis_tgt_destroy(tgt);
*** 499,511 ****
                              "file", file);
                          dis_tgt_destroy(tgt);
                          return (NULL);
                  }
  
                  current->dt_shnmap = safe_malloc(sizeof (dis_shnmap_t) *
!                     ehdr.e_shnum);
!                 current->dt_shncount = ehdr.e_shnum;
  
                  idx = 0;
                  dis_tgt_section_iter(current, tgt_scn_init, &idx);
                  current->dt_filename = file;
  
--- 500,519 ----
                              "file", file);
                          dis_tgt_destroy(tgt);
                          return (NULL);
                  }
  
+                 if (elf_getshdrnum(elf, &shnum) == -1) {
+                         warn("%s: failed to get number of sections in file",
+                             file);
+                         dis_tgt_destroy(tgt);
+                         return (NULL);
+                 }
+ 
                  current->dt_shnmap = safe_malloc(sizeof (dis_shnmap_t) *
!                     shnum);
!                 current->dt_shncount = shnum;
  
                  idx = 0;
                  dis_tgt_section_iter(current, tgt_scn_init, &idx);
                  current->dt_filename = file;