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Use XOBNEW/XOBNEWVEC/OBSTACK_ZALLOC when possible 

Since XOBNEW/XOBNEWVEC/OBSTACK_ZALLOC are now poisoned to prevent using
them with non-trivially-constructible objects, it is worth using them
over plain obstack_alloc.  This patch changes the locations I could find
where we can do that change easily.

gdb/ChangeLog:

	* ada-lang.c (cache_symbol): Use XOBNEW and/or XOBNEWVEC and/or
	OBSTACK_ZALLOC.
	* dwarf2-frame.c (dwarf2_build_frame_info): Likewise.
	* hppa-tdep.c (hppa_init_objfile_priv_data): Likewise.
	* mdebugread.c (mdebug_build_psymtabs): Likewise.
	(add_pending): Likewise.
	(parse_symbol): Likewise.
	(parse_partial_symbols): Likewise.
	(psymtab_to_symtab_1): Likewise.
	(new_psymtab): Likewise.
	(elfmdebug_build_psymtabs): Likewise.
	* minsyms.c (terminate_minimal_symbol_table): Likewise.
	* objfiles.c (get_objfile_bfd_data): Likewise.
	(objfile_register_static_link): Likewise.
	* psymtab.c (allocate_psymtab): Likewise.
	* stabsread.c (read_member_functions): Likewise.
	* xcoffread.c (xcoff_end_psymtab): Likewise.
This commit is contained in:
Simon Marchi 2018-05-20 21:07:03 -04:00 committed by Simon Marchi
parent 284a0e3cbf
commit e39db4db7c
10 changed files with 49 additions and 64 deletions
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20
gdb/ChangeLog
View File

@ -1,3 +1,23 @@
2018-05-20 Simon Marchi <simon.marchi@ericsson.com>
* ada-lang.c (cache_symbol): Use XOBNEW and/or XOBNEWVEC and/or
OBSTACK_ZALLOC.
* dwarf2-frame.c (dwarf2_build_frame_info): Likewise.
* hppa-tdep.c (hppa_init_objfile_priv_data): Likewise.
* mdebugread.c (mdebug_build_psymtabs): Likewise.
(add_pending): Likewise.
(parse_symbol): Likewise.
(parse_partial_symbols): Likewise.
(psymtab_to_symtab_1): Likewise.
(new_psymtab): Likewise.
(elfmdebug_build_psymtabs): Likewise.
* minsyms.c (terminate_minimal_symbol_table): Likewise.
* objfiles.c (get_objfile_bfd_data): Likewise.
(objfile_register_static_link): Likewise.
* psymtab.c (allocate_psymtab): Likewise.
* stabsread.c (read_member_functions): Likewise.
* xcoffread.c (xcoff_end_psymtab): Likewise.
2018-05-20 Simon Marchi <simon.marchi@ericsson.com>
* common/traits.h (HAVE_IS_TRIVIALLY_COPYABLE): Define if

3
gdb/ada-lang.c
View File

@ -4744,8 +4744,7 @@ cache_symbol (const char *name, domain_enum domain, struct symbol *sym,
return;
h = msymbol_hash (name) % HASH_SIZE;
e = (struct cache_entry *) obstack_alloc (&sym_cache->cache_space,
sizeof (*e));
e = XOBNEW (&sym_cache->cache_space, cache_entry);
e->next = sym_cache->root[h];
sym_cache->root[h] = e;
e->name = copy

3
gdb/dwarf2-frame.c
View File

@ -2205,8 +2205,7 @@ dwarf2_build_frame_info (struct objfile *objfile)
fde_table.entries = NULL;
/* Build a minimal decoding of the DWARF2 compilation unit. */
unit = (struct comp_unit *) obstack_alloc (&objfile->objfile_obstack,
sizeof (struct comp_unit));
unit = XOBNEW (&objfile->objfile_obstack, comp_unit);
unit->abfd = objfile->obfd;
unit->objfile = objfile;
unit->dbase = 0;

7
gdb/hppa-tdep.c
View File

@ -205,13 +205,10 @@ hppa_symbol_address(const char *sym)
static struct hppa_objfile_private *
hppa_init_objfile_priv_data (struct objfile *objfile)
{
struct hppa_objfile_private *priv;
hppa_objfile_private *priv
= OBSTACK_ZALLOC (&objfile->objfile_obstack, hppa_objfile_private);
priv = (struct hppa_objfile_private *)
obstack_alloc (&objfile->objfile_obstack,
sizeof (struct hppa_objfile_private));
set_objfile_data (objfile, hppa_objfile_priv_data, priv);
memset (priv, 0, sizeof (*priv));
return priv;
}

51
gdb/mdebugread.c
View File

@ -356,9 +356,8 @@ mdebug_build_psymtabs (minimal_symbol_reader &reader,
char *fdr_end;
FDR *fdr_ptr;
info->fdr = (FDR *) obstack_alloc (&objfile->objfile_obstack,
(info->symbolic_header.ifdMax
* sizeof (FDR)));
info->fdr = (FDR *) XOBNEWVEC (&objfile->objfile_obstack, FDR,
info->symbolic_header.ifdMax);
fdr_src = (char *) info->external_fdr;
fdr_end = (fdr_src
+ info->symbolic_header.ifdMax * swap->external_fdr_size);
@ -508,9 +507,7 @@ add_pending (FDR *fh, char *sh, struct type *t)
/* Make sure we do not make duplicates. */
if (!p)
{
p = ((struct mdebug_pending *)
obstack_alloc (&mdebugread_objfile->objfile_obstack,
sizeof (struct mdebug_pending)));
p = XOBNEW (&mdebugread_objfile->objfile_obstack, mdebug_pending);
p->s = sh;
p->t = t;
p->next = pending_list[f_idx];
@ -1174,10 +1171,8 @@ parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend,
SYMBOL_DOMAIN (s) = LABEL_DOMAIN;
SYMBOL_ACLASS_INDEX (s) = LOC_CONST;
SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void;
e = ((struct mdebug_extra_func_info *)
obstack_alloc (&mdebugread_objfile->objfile_obstack,
sizeof (struct mdebug_extra_func_info)));
memset (e, 0, sizeof (struct mdebug_extra_func_info));
e = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack,
mdebug_extra_func_info);
SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e;
e->numargs = top_stack->numargs;
e->pdr.framereg = -1;
@ -2370,8 +2365,7 @@ parse_partial_symbols (minimal_symbol_reader &reader,
&& (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
relocatable = 1;
extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack,
sizeof (EXTR) * hdr->iextMax);
extern_tab = XOBNEWVEC (&objfile->objfile_obstack, EXTR, hdr->iextMax);
includes_allocated = 30;
includes_used = 0;
@ -2413,10 +2407,8 @@ parse_partial_symbols (minimal_symbol_reader &reader,
}
/* Allocate the global pending list. */
pending_list =
((struct mdebug_pending **)
obstack_alloc (&objfile->objfile_obstack,
hdr->ifdMax * sizeof (struct mdebug_pending *)));
pending_list = XOBNEWVEC (&objfile->objfile_obstack, mdebug_pending *,
hdr->ifdMax);
memset (pending_list, 0,
hdr->ifdMax * sizeof (struct mdebug_pending *));
@ -2656,8 +2648,7 @@ parse_partial_symbols (minimal_symbol_reader &reader,
textlow,
objfile->global_psymbols,
objfile->static_psymbols);
pst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack,
sizeof (struct symloc));
pst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc);
memset (pst->read_symtab_private, 0, sizeof (struct symloc));
save_pst = pst;
@ -3771,11 +3762,8 @@ parse_partial_symbols (minimal_symbol_reader &reader,
/* Skip the first file indirect entry as it is a self dependency for
source files or a reverse .h -> .c dependency for header files. */
pst->number_of_dependencies = 0;
pst->dependencies =
((struct partial_symtab **)
obstack_alloc (&objfile->objfile_obstack,
((fh->crfd - 1)
* sizeof (struct partial_symtab *))));
pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack,
partial_symtab *, (fh->crfd - 1));
for (s_idx = 1; s_idx < fh->crfd; s_idx++)
{
RFDT rh;
@ -4061,13 +4049,11 @@ psymtab_to_symtab_1 (struct objfile *objfile,
{
/* Make up special symbol to contain
procedure specific info. */
struct mdebug_extra_func_info *e =
((struct mdebug_extra_func_info *)
obstack_alloc (&mdebugread_objfile->objfile_obstack,
sizeof (struct mdebug_extra_func_info)));
mdebug_extra_func_info *e
= OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack,
mdebug_extra_func_info);
struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME);
memset (e, 0, sizeof (struct mdebug_extra_func_info));
SYMBOL_DOMAIN (s) = LABEL_DOMAIN;
SYMBOL_ACLASS_INDEX (s) = LOC_CONST;
SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void;
@ -4736,9 +4722,8 @@ new_psymtab (const char *name, struct objfile *objfile)
/* Keep a backpointer to the file's symbols. */
psymtab->read_symtab_private = obstack_alloc (&objfile->objfile_obstack,
sizeof (struct symloc));
memset (psymtab->read_symtab_private, 0, sizeof (struct symloc));
psymtab->read_symtab_private
= OBSTACK_ZALLOC (&objfile->objfile_obstack, symloc);
CUR_BFD (psymtab) = cur_bfd;
DEBUG_SWAP (psymtab) = debug_swap;
DEBUG_INFO (psymtab) = debug_info;
@ -4863,9 +4848,7 @@ elfmdebug_build_psymtabs (struct objfile *objfile,
minimal_symbol_reader reader (objfile);
info = ((struct ecoff_debug_info *)
obstack_alloc (&objfile->objfile_obstack,
sizeof (struct ecoff_debug_info)));
info = XOBNEW (&objfile->objfile_obstack, ecoff_debug_info);
if (!(*swap->read_debug_info) (abfd, sec, info))
error (_("Error reading ECOFF debugging information: %s"),

6
gdb/minsyms.c
View File

@ -1419,10 +1419,8 @@ void
terminate_minimal_symbol_table (struct objfile *objfile)
{
if (! objfile->per_bfd->msymbols)
objfile->per_bfd->msymbols
= ((struct minimal_symbol *)
obstack_alloc (&objfile->per_bfd->storage_obstack,
sizeof (struct minimal_symbol)));
objfile->per_bfd->msymbols = XOBNEW (&objfile->per_bfd->storage_obstack,
minimal_symbol);
{
struct minimal_symbol *m

9
gdb/objfiles.c
View File

@ -147,11 +147,7 @@ get_objfile_bfd_data (struct objfile *objfile, struct bfd *abfd)
set_bfd_data (abfd, objfiles_bfd_data, storage);
}
else
{
storage = (objfile_per_bfd_storage *)
obstack_alloc (&objfile->objfile_obstack,
sizeof (objfile_per_bfd_storage));
}
storage = XOBNEW (&objfile->objfile_obstack, objfile_per_bfd_storage);
/* objfile_per_bfd_storage is not trivially constructible, must
call the ctor manually. */
@ -269,8 +265,7 @@ objfile_register_static_link (struct objfile *objfile,
slot = htab_find_slot (objfile->static_links, &lookup_entry, INSERT);
gdb_assert (*slot == NULL);
entry = (struct static_link_htab_entry *) obstack_alloc
(&objfile->objfile_obstack, sizeof (*entry));
entry = XOBNEW (&objfile->objfile_obstack, static_link_htab_entry);
entry->block = block;
entry->static_link = static_link;
*slot = (void *) entry;

4
gdb/psymtab.c
View File

@ -1805,9 +1805,7 @@ allocate_psymtab (const char *filename, struct objfile *objfile)
objfile->free_psymtabs = psymtab->next;
}
else
psymtab = (struct partial_symtab *)
obstack_alloc (&objfile->objfile_obstack,
sizeof (struct partial_symtab));
psymtab = XOBNEW (&objfile->objfile_obstack, partial_symtab);
memset (psymtab, 0, sizeof (struct partial_symtab));
psymtab->filename

7
gdb/stabsread.c
View File

@ -2733,11 +2733,8 @@ read_member_functions (struct field_info *fip, const char **pp,
xfree (main_fn_name);
}
new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
obstack_alloc (&objfile->objfile_obstack,
sizeof (struct fn_field) * length);
memset (new_fnlist->fn_fieldlist.fn_fields, 0,
sizeof (struct fn_field) * length);
new_fnlist->fn_fieldlist.fn_fields
= OBSTACK_CALLOC (&objfile->objfile_obstack, length, fn_field);
for (i = length; (i--, sublist); sublist = sublist->next)
{
new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;

3
gdb/xcoffread.c
View File

@ -2097,8 +2097,7 @@ xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst,
struct partial_symtab *subpst =
allocate_psymtab (include_list[i], objfile);
subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack,
sizeof (struct symloc));
subpst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc);
((struct symloc *) subpst->read_symtab_private)->first_symnum = 0;
((struct symloc *) subpst->read_symtab_private)->numsyms = 0;
subpst->textlow = 0;