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gcc/gcc41-pr33506.patch
Jakub Jelinek 9899d703f0 4.1.2-26
2007-09-22 08:13:13 +00:00

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2007-09-21 Jakub Jelinek <jakub@redhat.com>
PR c++/33506
* langhooks.h (struct lang_hooks_for_types): Add type_hash_eq
field.
* langhooks.c (lhd_type_hash_eq): New function.
* langhooks-def.h (lhd_type_hash_eq): New prototype.
(LANG_HOOKS_TYPE_HASH_EQ): Define.
(LANG_HOOKS_FOR_TYPES_INITIALIZER): Add LANG_HOOKS_TYPE_HASH_EQ.
* tree.c (type_hash_eq): For FUNCTION_TYPE use
lang_hooks.type.type_hash_eq in addition to generic tests.
* cp-tree.h (cxx_type_hash_eq): New prototype.
* cp-objcp-common.h (LANG_HOOKS_TYPE_HASH_EQ): Redefine.
* tree.c (cxx_type_hash_eq): New function.
* g++.dg/ext/attrib29.C: New test.
--- gcc/langhooks.h.jj 2007-02-20 16:39:12.000000000 -0500
+++ gcc/langhooks.h 2007-09-22 03:46:10.000000000 -0400
@@ -148,6 +148,10 @@ struct lang_hooks_for_types
firstprivate variables. */
void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree);
+ /* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes.
+ Called only after doing all language independent checks. */
+ bool (*type_hash_eq) (tree, tree);
+
/* Nonzero if types that are identical are to be hashed so that only
one copy is kept. If a language requires unique types for each
user-specified type, such as Ada, this should be set to TRUE. */
--- gcc/langhooks.c.jj 2007-02-20 16:39:12.000000000 -0500
+++ gcc/langhooks.c 2007-09-22 03:46:10.000000000 -0400
@@ -411,6 +411,16 @@ lhd_tree_dump_type_quals (tree t)
/* lang_hooks.expr_size: Determine the size of the value of an expression T
in a language-specific way. Returns a tree for the size in bytes. */
+/* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes.
+ Called only after doing all language independent checks. */
+
+bool
+lhd_type_hash_eq (tree typea ATTRIBUTE_UNUSED,
+ tree typeb ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
tree
lhd_expr_size (tree exp)
{
--- gcc/langhooks-def.h.jj 2007-02-20 16:39:13.000000000 -0500
+++ gcc/langhooks-def.h 2007-09-22 03:46:56.000000000 -0400
@@ -70,6 +70,7 @@ extern tree lhd_expr_size (tree);
extern size_t lhd_tree_size (enum tree_code);
extern HOST_WIDE_INT lhd_to_target_charset (HOST_WIDE_INT);
extern tree lhd_expr_to_decl (tree, bool *, bool *, bool *);
+extern bool lhd_type_hash_eq (tree, tree);
/* Declarations of default tree inlining hooks. */
extern tree lhd_tree_inlining_walk_subtrees (tree *, int *, walk_tree_fn,
@@ -220,6 +221,7 @@ extern tree lhd_make_node (enum tree_cod
#define LANG_HOOKS_TYPE_MAX_SIZE lhd_return_null_tree
#define LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES \
lhd_omp_firstprivatize_type_sizes
+#define LANG_HOOKS_TYPE_HASH_EQ lhd_type_hash_eq
#define LANG_HOOKS_HASH_TYPES true
#define LANG_HOOKS_FOR_TYPES_INITIALIZER { \
@@ -234,6 +236,7 @@ extern tree lhd_make_node (enum tree_cod
LANG_HOOKS_INCOMPLETE_TYPE_ERROR, \
LANG_HOOKS_TYPE_MAX_SIZE, \
LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES, \
+ LANG_HOOKS_TYPE_HASH_EQ, \
LANG_HOOKS_HASH_TYPES \
}
--- gcc/tree.c.jj 2007-04-03 07:18:26.000000000 -0400
+++ gcc/tree.c 2007-09-22 03:46:10.000000000 -0400
@@ -4168,17 +4168,21 @@ type_hash_eq (const void *va, const void
TYPE_FIELDS (b->type))));
case FUNCTION_TYPE:
- return (TYPE_ARG_TYPES (a->type) == TYPE_ARG_TYPES (b->type)
- || (TYPE_ARG_TYPES (a->type)
- && TREE_CODE (TYPE_ARG_TYPES (a->type)) == TREE_LIST
- && TYPE_ARG_TYPES (b->type)
- && TREE_CODE (TYPE_ARG_TYPES (b->type)) == TREE_LIST
- && type_list_equal (TYPE_ARG_TYPES (a->type),
- TYPE_ARG_TYPES (b->type))));
+ if (TYPE_ARG_TYPES (a->type) == TYPE_ARG_TYPES (b->type)
+ || (TYPE_ARG_TYPES (a->type)
+ && TREE_CODE (TYPE_ARG_TYPES (a->type)) == TREE_LIST
+ && TYPE_ARG_TYPES (b->type)
+ && TREE_CODE (TYPE_ARG_TYPES (b->type)) == TREE_LIST
+ && type_list_equal (TYPE_ARG_TYPES (a->type),
+ TYPE_ARG_TYPES (b->type))))
+ break;
+ return 0;
default:
return 0;
}
+
+ return lang_hooks.types.type_hash_eq (a->type, b->type);
}
/* Return the cached hash value. */
--- gcc/cp/cp-tree.h.jj 2007-06-26 07:57:09.000000000 -0400
+++ gcc/cp/cp-tree.h 2007-09-22 03:50:22.000000000 -0400
@@ -4421,7 +4421,8 @@ extern tree cp_add_pending_fn_decls (vo
extern int cp_auto_var_in_fn_p (tree,tree);
extern tree fold_if_not_in_template (tree);
extern tree rvalue (tree);
-
+extern bool cxx_type_hash_eq (tree, tree);
+
/* in typeck.c */
extern int string_conv_p (tree, tree, int);
extern tree cp_truthvalue_conversion (tree);
--- gcc/cp/cp-objcp-common.h.jj 2007-02-20 16:37:34.000000000 -0500
+++ gcc/cp/cp-objcp-common.h 2007-09-22 03:49:38.000000000 -0400
@@ -85,6 +85,8 @@ extern tree objcp_tsubst_copy_and_build
#define LANG_HOOKS_WRITE_GLOBALS lhd_do_nothing
#undef LANG_HOOKS_COMDAT_GROUP
#define LANG_HOOKS_COMDAT_GROUP cxx_comdat_group
+#undef LANG_HOOKS_TYPE_HASH_EQ
+#define LANG_HOOKS_TYPE_HASH_EQ cxx_type_hash_eq
#undef LANG_HOOKS_FUNCTION_INIT
#define LANG_HOOKS_FUNCTION_INIT cxx_push_function_context
--- gcc/cp/tree.c.jj 2007-03-12 03:28:01.000000000 -0400
+++ gcc/cp/tree.c 2007-09-22 03:46:10.000000000 -0400
@@ -1959,6 +1959,22 @@ cp_build_type_attribute_variant (tree ty
return new_type;
}
+/* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes.
+ Called only after doing all language independent checks. Only
+ to check TYPE_RAISES_EXCEPTIONS for FUNCTION_TYPE, the rest is already
+ compared in type_hash_eq. */
+
+bool
+cxx_type_hash_eq (tree typea, tree typeb)
+{
+ if (TREE_CODE (typea) != FUNCTION_TYPE
+ || TYPE_RAISES_EXCEPTIONS (typea) == TYPE_RAISES_EXCEPTIONS (typeb))
+ return true;
+
+ return comp_except_specs (TYPE_RAISES_EXCEPTIONS (typea),
+ TYPE_RAISES_EXCEPTIONS (typeb), 1);
+}
+
/* Apply FUNC to all language-specific sub-trees of TP in a pre-order
traversal. Called from walk_tree. */
--- gcc/testsuite/g++.dg/ext/attrib29.C.jj 2007-09-22 03:46:10.000000000 -0400
+++ gcc/testsuite/g++.dg/ext/attrib29.C 2007-09-22 03:46:10.000000000 -0400
@@ -0,0 +1,10 @@
+// PR c++/33506
+// { dg-do compile }
+
+extern int f1 (char *) __attribute__ ((warn_unused_result));
+extern int f2 (char *) throw () __attribute__ ((warn_unused_result));
+extern int f2 (char *) throw ();
+
+extern int f3 (char *) __attribute__ ((nonnull (1)));
+extern int f4 (char *) throw () __attribute__ ((nonnull (1)));
+extern int f4 (char *) throw ();
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