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cp-tree.h (TYPE_LINKAGE_IDENTIFIER): New macro. 

* cp-tree.h (TYPE_LINKAGE_IDENTIFIER): New macro.
        (TYPE_ANONYMOUS_P): New macro.
        (TAGGED_TYPE_P): New macro.
        * decl.c (check_tag_decl): Use TYPE_ANONYMOUS_P.
        (grokfndecl, grokvardecl, grokdeclarator): Likewise.
        * tree.c (no_linkage_helper): Likewise.
        * semantics.c (begin_class_definition): Likewise.
        * pt.c (convert_template_argument): Likewise.
        * lex.c (check_for_missing_semicolon): Likewise.

From-SVN: r41303
This commit is contained in:
Jason Merrill 2001-04-12 10:15:48 -04:00 committed by Jason Merrill
parent d93aa33514
commit 1951a1b6ec
8 changed files with 53 additions and 34 deletions
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12
gcc/cp/ChangeLog
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@ -1,3 +1,15 @@
2001-04-11 Jason Merrill <jason_merrill@redhat.com>
* cp-tree.h (TYPE_LINKAGE_IDENTIFIER): New macro.
(TYPE_ANONYMOUS_P): New macro.
(TAGGED_TYPE_P): New macro.
* decl.c (check_tag_decl): Use TYPE_ANONYMOUS_P.
(grokfndecl, grokvardecl, grokdeclarator): Likewise.
* tree.c (no_linkage_helper): Likewise.
* semantics.c (begin_class_definition): Likewise.
* pt.c (convert_template_argument): Likewise.
* lex.c (check_for_missing_semicolon): Likewise.
2001-04-12 Nathan Sidwell <nathan@codesourcery.com>
* class.c (dfs_unshared_virtual_bases): New function.

11
gcc/cp/cp-tree.h
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@ -1163,12 +1163,18 @@ enum languages { lang_c, lang_cplusplus, lang_java };
/* Macros to make error reporting functions' lives easier. */
#define TYPE_IDENTIFIER(NODE) (DECL_NAME (TYPE_NAME (NODE)))
#define TYPE_LINKAGE_IDENTIFIER(NODE) \
(TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
#define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
#define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
#define TYPE_ASSEMBLER_NAME_STRING(NODE) (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (TYPE_NAME (NODE))))
#define TYPE_ASSEMBLER_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (TYPE_NAME (NODE))))
/* Nonzero if NODE has no name for linkage purposes. */
#define TYPE_ANONYMOUS_P(NODE) \
(TAGGED_TYPE_P (NODE) && ANON_AGGRNAME_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
/* The _DECL for this _TYPE. */
#define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
@ -1198,8 +1204,9 @@ enum languages { lang_c, lang_cplusplus, lang_java };
#define IS_AGGR_TYPE_2(TYPE1,TYPE2) \
(TREE_CODE (TYPE1) == TREE_CODE (TYPE2) \
&& IS_AGGR_TYPE (TYPE1) && IS_AGGR_TYPE (TYPE2))
#define IS_OVERLOAD_TYPE(t) \
(IS_AGGR_TYPE (t) || TREE_CODE (t) == ENUMERAL_TYPE)
#define TAGGED_TYPE_P(t) \
(CLASS_TYPE_P (t) || TREE_CODE (t) == ENUMERAL_TYPE)
#define IS_OVERLOAD_TYPE(T) TAGGED_TYPE_P (T)
/* In a *_TYPE, nonzero means a built-in type. */
#define TYPE_BUILT_IN(NODE) TYPE_LANG_FLAG_6(NODE)

37
gcc/cp/decl.c
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@ -2873,6 +2873,7 @@ pushtag (name, type, globalize)
else
d = pushdecl_with_scope (d, b);
/* FIXME what if it gets a name from typedef? */
if (ANON_AGGRNAME_P (name))
DECL_IGNORED_P (d) = 1;
@ -6972,12 +6973,9 @@ check_tag_decl (declspecs)
if (t == NULL_TREE && ! saw_friend)
pedwarn ("declaration does not declare anything");
/* Check for an anonymous union. We're careful
accessing TYPE_IDENTIFIER because some built-in types, like
pointer-to-member types, do not have TYPE_NAME. */
/* Check for an anonymous union. */
else if (t && IS_AGGR_TYPE_CODE (TREE_CODE (t))
&& TYPE_NAME (t)
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
&& TYPE_ANONYMOUS_P (t))
{
/* 7/3 In a simple-declaration, the optional init-declarator-list
can be omitted only when declaring a class (clause 9) or
@ -8733,17 +8731,11 @@ grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
int check, friendp, publicp, inlinep, funcdef_flag, template_count;
tree in_namespace;
{
tree cname, decl;
tree decl;
int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
int has_default_arg = 0;
tree t;
if (ctype)
cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
else
cname = NULL_TREE;
if (raises)
{
type = build_exception_variant (type, raises);
@ -8799,7 +8791,8 @@ grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
/* Members of anonymous types and local classes have no linkage; make
them internal. */
if (ctype && (ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype))
/* FIXME what if it gets a name from typedef? */
if (ctype && (TYPE_ANONYMOUS_P (ctype)
|| decl_function_context (TYPE_MAIN_DECL (ctype))))
publicp = 0;
@ -8813,13 +8806,19 @@ grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
t = no_linkage_check (TREE_TYPE (decl));
if (t)
{
if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
if (TYPE_ANONYMOUS_P (t))
{
if (DECL_EXTERN_C_P (decl))
/* Allow this; it's pretty common in C. */;
else
cp_pedwarn ("non-local function `%#D' uses anonymous type",
decl);
{
cp_pedwarn ("non-local function `%#D' uses anonymous type",
decl);
if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
cp_pedwarn_at ("\
`%#D' does not refer to the unqualified type, so it is not used for linkage",
TYPE_NAME (t));
}
}
else
cp_pedwarn ("non-local function `%#D' uses local type `%T'",
@ -8931,7 +8930,7 @@ grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
if (check < 0)
return decl;
if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
if (flags == NO_SPECIAL && ctype && constructor_name (ctype) == declarator)
DECL_CONSTRUCTOR_P (decl) = 1;
/* Function gets the ugly name, field gets the nice one. This call
@ -9095,7 +9094,7 @@ grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace)
tree t = no_linkage_check (TREE_TYPE (decl));
if (t)
{
if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
if (TYPE_ANONYMOUS_P (t))
/* Ignore for now; `enum { foo } e' is pretty common. */;
else
cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
@ -11037,7 +11036,7 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
&& declarator
&& TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (type))
&& TYPE_ANONYMOUS_P (type)
&& CP_TYPE_QUALS (type) == TYPE_UNQUALIFIED)
{
tree oldname = TYPE_NAME (type);

2
gcc/cp/lex.c
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@ -1011,7 +1011,7 @@ check_for_missing_semicolon (type)
&& yychar != SELFNAME)
|| yychar == 0 /* EOF */)
{
if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
if (TYPE_ANONYMOUS_P (type))
error ("semicolon missing after %s declaration",
TREE_CODE (type) == ENUMERAL_TYPE ? "enum" : "struct");
else

2
gcc/cp/pt.c
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@ -3389,7 +3389,7 @@ convert_template_argument (parm, arg, args, complain, i, in_decl)
tree t = no_linkage_check (val);
if (t)
{
if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
if (TYPE_ANONYMOUS_P (t))
cp_pedwarn
("template-argument `%T' uses anonymous type", val);
else

16
gcc/cp/semantics.c
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@ -1860,16 +1860,12 @@ begin_class_definition (t)
/* Reset the interface data, at the earliest possible
moment, as it might have been set via a class foo;
before. */
{
tree name = TYPE_IDENTIFIER (t);
if (! ANON_AGGRNAME_P (name))
{
CLASSTYPE_INTERFACE_ONLY (t) = interface_only;
SET_CLASSTYPE_INTERFACE_UNKNOWN_X
(t, interface_unknown);
}
}
if (! TYPE_ANONYMOUS_P (t))
{
CLASSTYPE_INTERFACE_ONLY (t) = interface_only;
SET_CLASSTYPE_INTERFACE_UNKNOWN_X
(t, interface_unknown);
}
reset_specialization();
/* Make a declaration for this class in its own scope. */

2
gcc/cp/tree.c
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@ -1502,7 +1502,7 @@ no_linkage_helper (tp, walk_subtrees, data)
if (TYPE_P (t)
&& (CLASS_TYPE_P (t) || TREE_CODE (t) == ENUMERAL_TYPE)
&& (decl_function_context (TYPE_MAIN_DECL (t))
|| ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))))
|| TYPE_ANONYMOUS_P (t)))
return t;
return NULL_TREE;
}

5
gcc/testsuite/g++.old-deja/g++.other/anon9.C Normal file
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@ -0,0 +1,5 @@
// Test that we properly diagnose an attempt to use an anonymous class
// in declaring an external function.
typedef const struct { int i; } T; // ERROR - referenced below
void f (T* t); // ERROR - uses unnamed type