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[multiple changes]

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Mon Sep 29 11:05:54 1997  Alexandre Oliva  <oliva@dcc.unicamp.br>

	* lang-options.h: new -Wold-style-cast flag.
	* cp-tree.h (warn_old_style_cast): new variable.
	* decl2.c (warn_old_style_cast): ditto.
	(lang_decode_option): support -Wold-style-cast.
	(reparse_absdcl_as_casts): produce old-style-cast warning.

Mon Sep 29 09:20:53 1997  Benjamin Kosnik  <bkoz@rhino.cygnus.com>

	* decl.c (cp_finish_decl): Allow expand_aggr_init to set
 	TREE_USED, reset value based on already_used.

	* init.c (expand_member_init): Revert change.

From-SVN: r15793
This commit is contained in:
Jason Merrill 1997-09-29 15:05:04 -04:00
parent 974c50f907
commit 0c4b14c4d3
5 changed files with 37 additions and 0 deletions
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15
gcc/cp/ChangeLog
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@ -1,3 +1,18 @@
Mon Sep 29 11:05:54 1997 Alexandre Oliva <oliva@dcc.unicamp.br>
* lang-options.h: new -Wold-style-cast flag.
* cp-tree.h (warn_old_style_cast): new variable.
* decl2.c (warn_old_style_cast): ditto.
(lang_decode_option): support -Wold-style-cast.
(reparse_absdcl_as_casts): produce old-style-cast warning.
Mon Sep 29 09:20:53 1997 Benjamin Kosnik <bkoz@rhino.cygnus.com>
* decl.c (cp_finish_decl): Allow expand_aggr_init to set
TREE_USED, reset value based on already_used.
* init.c (expand_member_init): Revert change.
Mon Sep 29 08:57:53 1997 Jason Merrill <jason@yorick.cygnus.com>
* cp-tree.h, decl.c, decl2.c, pt.c:

4
gcc/cp/cp-tree.h
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@ -257,6 +257,10 @@ extern int warn_sign_promo;
extern int warn_extern_inline;
/* Non-zero means warn when an old-style cast is used. */
extern int warn_old_style_cast;
/* Nonzero means to treat bitfields as unsigned unless they say `signed'. */
extern int flag_signed_bitfields;

7
gcc/cp/decl.c
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@ -6299,6 +6299,7 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
int temporary = allocation_temporary_p ();
char *asmspec = NULL;
int was_readonly = 0;
int already_used = 0;
/* If this is 0, then we did not change obstacks. */
if (! decl)
@ -6858,6 +6859,7 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
{
/* Compute and store the initial value. */
expand_decl_init (decl);
already_used = TREE_USED (decl) || TREE_USED (type);
if (init || TYPE_NEEDS_CONSTRUCTING (type))
{
@ -6870,10 +6872,15 @@ cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
was initialized was ever used. Don't do this if it has a
destructor, so we don't complain about the 'resource
allocation is initialization' idiom. */
if (TYPE_NEEDS_CONSTRUCTING (type)
&& ! already_used
&& cleanup == NULL_TREE
&& DECL_NAME (decl))
TREE_USED (decl) = 0;
if (already_used)
TREE_USED (decl) = 1;
}
/* Cleanup any temporaries needed for the initial value. */

9
gcc/cp/decl2.c
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@ -268,6 +268,10 @@ int warn_ecpp;
int warn_sign_promo;
/* Nonzero means warn when an old-style cast is used. */
int warn_old_style_cast;
/* Nonzero means `$' can be in an identifier.
See cccp.c for reasons why this breaks some obscure ANSI C programs. */
@ -649,6 +653,8 @@ lang_decode_option (p)
warn_ecpp = setting;
else if (!strcmp (p, "sign-promo"))
warn_sign_promo = setting;
else if (!strcmp (p, "old-style-cast"))
warn_old_style_cast = setting;
else if (!strcmp (p, "comment"))
; /* cpp handles this one. */
else if (!strcmp (p, "comments"))
@ -3375,6 +3381,9 @@ reparse_absdcl_as_casts (decl, expr)
expr = build_c_cast (type, expr);
}
if (warn_old_style_cast)
warning ("use of old-style cast");
return expr;
}

2
gcc/cp/lang-options.h
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@ -111,3 +111,5 @@ Boston, MA 02111-1307, USA. */
"-Wno-effc++",
"-Wsign-promo",
"-Wno-sign-promo",
"-Wold-style-cast",
"-Wno-old-style-cast",