2011-10-11 Sterling Augustine <saugustine@google.com>

* dwarf2read.c: Undo inadvertent changes in previous commit.

gdb/ChangeLog

@@ -1,3 +1,7 @@
+2011-10-11  Sterling Augustine  <saugustine@google.com>
+
+	* dwarf2read.c: Undo inadvertent changes in previous commit.
+
 2011-10-11  Sterling Augustine  <saugustine@google.com>
 
 	* dwarf2read.c (partial_die_parent_scope): Rearrange conditional

gdb/dwarf2read.c

@@ -407,6 +407,9 @@ struct dwarf2_cu
      after all type information has been read.  */
   VEC (delayed_method_info) *method_list;
 
+  /* To be copied to symtab->call_site_htab.  */
+  htab_t call_site_htab;
+
   /* Mark used when releasing cached dies.  */
   unsigned int mark : 1;
 
@@ -1079,6 +1082,8 @@ static void read_func_scope (struct die_info *, struct dwarf2_cu *);
 
 static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *);
 
+static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu);
+
 static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *,
 			       struct dwarf2_cu *, struct partial_symtab *);
 
@@ -2650,7 +2655,21 @@ dw2_find_symbol_file (struct objfile *objfile, const char *name)
 
   /* index_table is NULL if OBJF_READNOW.  */
   if (!dwarf2_per_objfile->index_table)
+    {
+      struct symtab *s;
+
+      ALL_OBJFILE_SYMTABS (objfile, s)
+	if (s->primary)
+	  {
+	    struct blockvector *bv = BLOCKVECTOR (s);
+	    const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
+	    struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN);
+
+	    if (sym)
+	      return sym->symtab->filename;
+	  }
       return NULL;
+    }
 
   if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table,
 				 name, &vec))
@@ -4785,6 +4804,8 @@ process_full_comp_unit (struct dwarf2_per_cu_data *per_cu)
 
       if (gcc_4_minor >= 5)
 	symtab->epilogue_unwind_valid = 1;
+
+      symtab->call_site_htab = cu->call_site_htab;
     }
 
   if (dwarf2_per_objfile->using_index)
@@ -4823,6 +4844,9 @@ process_die (struct die_info *die, struct dwarf2_cu *cu)
     case DW_TAG_catch_block:
       read_lexical_block_scope (die, cu);
       break;
+    case DW_TAG_GNU_call_site:
+      read_call_site_scope (die, cu);
+      break;
     case DW_TAG_class_type:
     case DW_TAG_interface_type:
     case DW_TAG_structure_type:
@@ -6117,6 +6141,258 @@ read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu)
   using_directives = new->using_directives;
 }
 
+/* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab.  */
+
+static void
+read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
+{
+  struct objfile *objfile = cu->objfile;
+  struct gdbarch *gdbarch = get_objfile_arch (objfile);
+  CORE_ADDR pc, baseaddr;
+  struct attribute *attr;
+  struct call_site *call_site, call_site_local;
+  void **slot;
+  int nparams;
+  struct die_info *child_die;
+
+  baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+
+  attr = dwarf2_attr (die, DW_AT_low_pc, cu);
+  if (!attr)
+    {
+      complaint (&symfile_complaints,
+		 _("missing DW_AT_low_pc for DW_TAG_GNU_call_site "
+		   "DIE 0x%x [in module %s]"),
+		 die->offset, cu->objfile->name);
+      return;
+    }
+  pc = DW_ADDR (attr) + baseaddr;
+
+  if (cu->call_site_htab == NULL)
+    cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq,
+					       NULL, &objfile->objfile_obstack,
+					       hashtab_obstack_allocate, NULL);
+  call_site_local.pc = pc;
+  slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT);
+  if (*slot != NULL)
+    {
+      complaint (&symfile_complaints,
+		 _("Duplicate PC %s for DW_TAG_GNU_call_site "
+		   "DIE 0x%x [in module %s]"),
+		 paddress (gdbarch, pc), die->offset, cu->objfile->name);
+      return;
+    }
+
+  /* Count parameters at the caller.  */
+
+  nparams = 0;
+  for (child_die = die->child; child_die && child_die->tag;
+       child_die = sibling_die (child_die))
+    {
+      if (child_die->tag != DW_TAG_GNU_call_site_parameter)
+	{
+	  complaint (&symfile_complaints,
+		     _("Tag %d is not DW_TAG_GNU_call_site_parameter in "
+		       "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
+		     child_die->tag, child_die->offset, cu->objfile->name);
+	  continue;
+	}
+
+      nparams++;
+    }
+
+  call_site = obstack_alloc (&objfile->objfile_obstack,
+			     (sizeof (*call_site)
+			      + (sizeof (*call_site->parameter)
+				 * (nparams - 1))));
+  *slot = call_site;
+  memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter));
+  call_site->pc = pc;
+
+  if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu))
+    {
+      struct die_info *func_die;
+
+      /* Skip also over DW_TAG_inlined_subroutine.  */
+      for (func_die = die->parent;
+	   func_die && func_die->tag != DW_TAG_subprogram
+	   && func_die->tag != DW_TAG_subroutine_type;
+	   func_die = func_die->parent);
+
+      /* DW_AT_GNU_all_call_sites is a superset
+	 of DW_AT_GNU_all_tail_call_sites.  */
+      if (func_die
+          && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu)
+	  && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu))
+	{
+	  /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is
+	     not complete.  But keep CALL_SITE for look ups via call_site_htab,
+	     both the initial caller containing the real return address PC and
+	     the final callee containing the current PC of a chain of tail
+	     calls do not need to have the tail call list complete.  But any
+	     function candidate for a virtual tail call frame searched via
+	     TYPE_TAIL_CALL_LIST must have the tail call list complete to be
+	     determined unambiguously.  */
+	}
+      else
+	{
+	  struct type *func_type = NULL;
+
+	  if (func_die)
+	    func_type = get_die_type (func_die, cu);
+	  if (func_type != NULL)
+	    {
+	      gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC);
+
+	      /* Enlist this call site to the function.  */
+	      call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type);
+	      TYPE_TAIL_CALL_LIST (func_type) = call_site;
+	    }
+	  else
+	    complaint (&symfile_complaints,
+		       _("Cannot find function owning DW_TAG_GNU_call_site "
+			 "DIE 0x%x [in module %s]"),
+		       die->offset, cu->objfile->name);
+	}
+    }
+
+  attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu);
+  if (attr == NULL)
+    attr = dwarf2_attr (die, DW_AT_abstract_origin, cu);
+  SET_FIELD_DWARF_BLOCK (call_site->target, NULL);
+  if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0))
+    /* Keep NULL DWARF_BLOCK.  */;
+  else if (attr_form_is_block (attr))
+    {
+      struct dwarf2_locexpr_baton *dlbaton;
+
+      dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton));
+      dlbaton->data = DW_BLOCK (attr)->data;
+      dlbaton->size = DW_BLOCK (attr)->size;
+      dlbaton->per_cu = cu->per_cu;
+
+      SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton);
+    }
+  else if (is_ref_attr (attr))
+    {
+      struct objfile *objfile = cu->objfile;
+      struct dwarf2_cu *target_cu = cu;
+      struct die_info *target_die;
+
+      target_die = follow_die_ref_or_sig (die, attr, &target_cu);
+      gdb_assert (target_cu->objfile == objfile);
+      if (die_is_declaration (target_die, target_cu))
+	{
+	  const char *target_physname;
+
+	  target_physname = dwarf2_physname (NULL, target_die, target_cu);
+	  if (target_physname == NULL)
+	    complaint (&symfile_complaints,
+		       _("DW_AT_GNU_call_site_target target DIE has invalid "
+		         "physname, for referencing DIE 0x%x [in module %s]"),
+		       die->offset, cu->objfile->name);
+	  else
+	    SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname);
+	}
+      else
+	{
+	  CORE_ADDR lowpc;
+
+	  /* DW_AT_entry_pc should be preferred.  */
+	  if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL))
+	    complaint (&symfile_complaints,
+		       _("DW_AT_GNU_call_site_target target DIE has invalid "
+		         "low pc, for referencing DIE 0x%x [in module %s]"),
+		       die->offset, cu->objfile->name);
+	  else
+	    SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr);
+	}
+    }
+  else
+    complaint (&symfile_complaints,
+	       _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither "
+		 "block nor reference, for DIE 0x%x [in module %s]"),
+	       die->offset, cu->objfile->name);
+
+  call_site->per_cu = cu->per_cu;
+
+  for (child_die = die->child;
+       child_die && child_die->tag;
+       child_die = sibling_die (child_die))
+    {
+      struct dwarf2_locexpr_baton *dlbaton;
+      struct call_site_parameter *parameter;
+
+      if (child_die->tag != DW_TAG_GNU_call_site_parameter)
+	{
+	  /* Already printed the complaint above.  */
+	  continue;
+	}
+
+      gdb_assert (call_site->parameter_count < nparams);
+      parameter = &call_site->parameter[call_site->parameter_count];
+
+      /* DW_AT_location specifies the register number.  Value of the data
+	 assumed for the register is contained in DW_AT_GNU_call_site_value.  */
+
+      attr = dwarf2_attr (child_die, DW_AT_location, cu);
+      if (!attr || !attr_form_is_block (attr))
+	{
+	  complaint (&symfile_complaints,
+		     _("No DW_FORM_block* DW_AT_location for "
+		       "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
+		     child_die->offset, cu->objfile->name);
+	  continue;
+	}
+      parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data,
+				 &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]);
+      if (parameter->dwarf_reg == -1
+	  && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data,
+				  &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size],
+					&parameter->fb_offset))
+	{
+	  complaint (&symfile_complaints,
+		     _("Only single DW_OP_reg or DW_OP_fbreg is supported "
+		       "for DW_FORM_block* DW_AT_location for "
+		       "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
+		     child_die->offset, cu->objfile->name);
+	  continue;
+	}
+
+      attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu);
+      if (!attr_form_is_block (attr))
+	{
+	  complaint (&symfile_complaints,
+		     _("No DW_FORM_block* DW_AT_GNU_call_site_value for "
+		       "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
+		     child_die->offset, cu->objfile->name);
+	  continue;
+	}
+      parameter->value = DW_BLOCK (attr)->data;
+      parameter->value_size = DW_BLOCK (attr)->size;
+
+      /* Parameters are not pre-cleared by memset above.  */
+      parameter->data_value = NULL;
+      parameter->data_value_size = 0;
+      call_site->parameter_count++;
+
+      attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu);
+      if (attr)
+	{
+	  if (!attr_form_is_block (attr))
+	    complaint (&symfile_complaints,
+		       _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for "
+			 "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
+		       child_die->offset, cu->objfile->name);
+	  else
+	    {
+	      parameter->data_value = DW_BLOCK (attr)->data;
+	      parameter->data_value_size = DW_BLOCK (attr)->size;
+	    }
+	}
+    }
+}
+
 /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET.
    Return 1 if the attributes are present and valid, otherwise, return 0.
    If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'.  */
@@ -6316,6 +6592,7 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
     return 0;
 
   *lowpc = low;
+  if (highpc)
     *highpc = high;
   return ret;
 }
@@ -9801,9 +10078,10 @@ fixup_partial_die (struct partial_die_info *part_die,
   /* GCC might emit a nameless struct or union that has a linkage
      name.  See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510.  */
   if (part_die->name == NULL
-      && (part_die->tag == DW_TAG_structure_type
+      && (part_die->tag == DW_TAG_class_type
-	  || part_die->tag == DW_TAG_union_type
+	  || part_die->tag == DW_TAG_interface_type
-	  || part_die->tag == DW_TAG_class_type)
+	  || part_die->tag == DW_TAG_structure_type
+	  || part_die->tag == DW_TAG_union_type)
       && part_die->linkage_name != NULL)
     {
       char *demangled;
@@ -9811,7 +10089,17 @@ fixup_partial_die (struct partial_die_info *part_die,
       demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES);
       if (demangled)
 	{
-	  part_die->name = obsavestring (demangled, strlen (demangled),
+	  const char *base;
+
+	  /* Strip any leading namespaces/classes, keep only the base name.
+	     DW_AT_name for named DIEs does not contain the prefixes.  */
+	  base = strrchr (demangled, ':');
+	  if (base && base > demangled && base[-1] == ':')
+	    base++;
+	  else
+	    base = demangled;
+
+	  part_die->name = obsavestring (base, strlen (base),
 					 &cu->objfile->objfile_obstack);
 	  xfree (demangled);
 	}
@@ -12160,6 +12448,42 @@ guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu)
   return NULL;
 }
 
+/* GCC might emit a nameless typedef that has a linkage name.  Determine the
+   prefix part in such case.  See
+   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510.  */
+
+static char *
+anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu)
+{
+  struct attribute *attr;
+  char *base;
+
+  if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type
+      && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type)
+    return NULL;
+
+  attr = dwarf2_attr (die, DW_AT_name, cu);
+  if (attr != NULL && DW_STRING (attr) != NULL)
+    return NULL;
+
+  attr = dwarf2_attr (die, DW_AT_linkage_name, cu);
+  if (attr == NULL)
+    attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
+  if (attr == NULL || DW_STRING (attr) == NULL)
+    return NULL;
+
+  /* dwarf2_name had to be already called.  */
+  gdb_assert (DW_STRING_IS_CANONICAL (attr));
+
+  /* Strip the base name, keep any leading namespaces/classes.  */
+  base = strrchr (DW_STRING (attr), ':');
+  if (base == NULL || base == DW_STRING (attr) || base[-1] != ':')
+    return "";
+
+  return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr),
+		       &cu->objfile->objfile_obstack);
+}
+
 /* Return the name of the namespace/class that DIE is defined within,
    or "" if we can't tell.  The caller should not xfree the result.
 
@@ -12181,11 +12505,16 @@ determine_prefix (struct die_info *die, struct dwarf2_cu *cu)
   struct die_info *parent, *spec_die;
   struct dwarf2_cu *spec_cu;
   struct type *parent_type;
+  char *retval;
 
   if (cu->language != language_cplus && cu->language != language_java
       && cu->language != language_fortran)
     return "";
 
+  retval = anonymous_struct_prefix (die, cu);
+  if (retval)
+    return retval;
+
   /* We have to be careful in the presence of DW_AT_specification.
      For example, with GCC 3.4, given the code
 
@@ -12477,12 +12806,21 @@ dwarf2_name (struct die_info *die, struct dwarf2_cu *cu)
 
 	  if (demangled)
 	    {
+	      char *base;
+
 	      /* FIXME: we already did this for the partial symbol... */
-	      DW_STRING (attr)
+	      DW_STRING (attr) = obsavestring (demangled, strlen (demangled),
-		= obsavestring (demangled, strlen (demangled),
 					       &cu->objfile->objfile_obstack);
 	      DW_STRING_IS_CANONICAL (attr) = 1;
 	      xfree (demangled);
+
+	      /* Strip any leading namespaces/classes, keep only the base name.
+		 DW_AT_name for named DIEs does not contain the prefixes.  */
+	      base = strrchr (DW_STRING (attr), ':');
+	      if (base && base > DW_STRING (attr) && base[-1] == ':')
+		return &base[1];
+	      else
+		return DW_STRING (attr);
 	    }
 	}
       break;
@@ -12666,6 +13004,8 @@ dwarf_tag_name (unsigned tag)
       return "DW_TAG_PGI_kanji_type";
     case DW_TAG_PGI_interface_block:
       return "DW_TAG_PGI_interface_block";
+    case DW_TAG_GNU_call_site:
+      return "DW_TAG_GNU_call_site";
     default:
       return "DW_TAG_<unknown>";
     }
@@ -14148,6 +14488,7 @@ decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)
 
   ctx->gdbarch = get_objfile_arch (objfile);
   ctx->addr_size = cu->header.addr_size;
+  ctx->ref_addr_size = dwarf2_per_cu_ref_addr_size (cu->per_cu);
   ctx->offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
   ctx->baton = ctx;
   ctx->funcs = &decode_locdesc_ctx_funcs;
@@ -15187,26 +15528,42 @@ dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu)
   return objfile;
 }
 
+/* Return comp_unit_head for PER_CU, either already available in PER_CU->CU
+   (CU_HEADERP is unused in such case) or prepare a temporary copy at
+   CU_HEADERP first.  */
+
+static const struct comp_unit_head *
+per_cu_header_read_in (struct comp_unit_head *cu_headerp,
+		       struct dwarf2_per_cu_data *per_cu)
+{
+  struct objfile *objfile;
+  struct dwarf2_per_objfile *per_objfile;
+  gdb_byte *info_ptr;
+
+  if (per_cu->cu)
+    return &per_cu->cu->header;
+
+  objfile = per_cu->objfile;
+  per_objfile = objfile_data (objfile, dwarf2_objfile_data_key);
+  info_ptr = per_objfile->info.buffer + per_cu->offset;
+
+  memset (cu_headerp, 0, sizeof (*cu_headerp));
+  read_comp_unit_head (cu_headerp, info_ptr, objfile->obfd);
+
+  return cu_headerp;
+}
+
 /* Return the address size given in the compilation unit header for CU.  */
 
 CORE_ADDR
 dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu)
 {
-  if (per_cu->cu)
+  struct comp_unit_head cu_header_local;
-    return per_cu->cu->header.addr_size;
+  const struct comp_unit_head *cu_headerp;
-  else
-    {
-      /* If the CU is not currently read in, we re-read its header.  */
-      struct objfile *objfile = per_cu->objfile;
-      struct dwarf2_per_objfile *per_objfile
-	= objfile_data (objfile, dwarf2_objfile_data_key);
-      gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset;
-      struct comp_unit_head cu_header;
 
-      memset (&cu_header, 0, sizeof cu_header);
+  cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu);
-      read_comp_unit_head (&cu_header, info_ptr, objfile->obfd);
+
-      return cu_header.addr_size;
+  return cu_headerp->addr_size;
-    }
 }
 
 /* Return the offset size given in the compilation unit header for CU.  */
@@ -15214,21 +15571,28 @@ dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu)
 int
 dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu)
 {
-  if (per_cu->cu)
+  struct comp_unit_head cu_header_local;
-    return per_cu->cu->header.offset_size;
+  const struct comp_unit_head *cu_headerp;
-  else
-    {
-      /* If the CU is not currently read in, we re-read its header.  */
-      struct objfile *objfile = per_cu->objfile;
-      struct dwarf2_per_objfile *per_objfile
-	= objfile_data (objfile, dwarf2_objfile_data_key);
-      gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset;
-      struct comp_unit_head cu_header;
 
-      memset (&cu_header, 0, sizeof cu_header);
+  cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu);
-      read_comp_unit_head (&cu_header, info_ptr, objfile->obfd);
+
-      return cu_header.offset_size;
+  return cu_headerp->offset_size;
-    }
+}
+
+/* See its dwarf2loc.h declaration.  */
+
+int
+dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu)
+{
+  struct comp_unit_head cu_header_local;
+  const struct comp_unit_head *cu_headerp;
+
+  cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu);
+
+  if (cu_headerp->version == 2)
+    return cu_headerp->addr_size;
+  else
+    return cu_headerp->offset_size;
 }
 
 /* Return the text offset of the CU.  The returned offset comes from
@@ -16327,14 +16691,6 @@ write_one_signatured_type (void **slot, void *d)
   return 1;
 }
 
-/* A cleanup function for an htab_t.  */
-
-static void
-cleanup_htab (void *arg)
-{
-  htab_delete (arg);
-}
-
 /* Create an index file for OBJFILE in the directory DIR.  */
 
 static void
@@ -16391,7 +16747,7 @@ write_psymtabs_to_index (struct objfile *objfile, const char *dir)
 
   psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer,
 				  NULL, xcalloc, xfree);
-  make_cleanup (cleanup_htab, psyms_seen);
+  make_cleanup_htab_delete (psyms_seen);
 
   /* While we're scanning CU's create a table that maps a psymtab pointer
      (which is what addrmap records) to its index (which is what is recorded
@@ -16401,7 +16757,7 @@ write_psymtabs_to_index (struct objfile *objfile, const char *dir)
 				     hash_psymtab_cu_index,
 				     eq_psymtab_cu_index,
 				     NULL, xcalloc, xfree);
-  make_cleanup (cleanup_htab, cu_index_htab);
+  make_cleanup_htab_delete (cu_index_htab);
   psymtab_cu_index_map = (struct psymtab_cu_index_map *)
     xmalloc (sizeof (struct psymtab_cu_index_map)
 	     * dwarf2_per_objfile->n_comp_units);

readline/complete.c

@@ -1994,7 +1994,8 @@ rl_completion_matches (text, entry_function)
   match_list[1] = (char *)NULL;
 
   _rl_interrupt_immediately++;
-  while (string = (*entry_function) (text, matches))
+  while (string = (*entry_function) (text, matches)
+         && matches <= rl_completion_query_items)
     {
       if (matches + 1 == match_list_size)
 	match_list = (char **)xrealloc