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| author | Nathan Sidwell <nathan@acm.org> | 2017-06-16 14:54:39 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2017-06-16 14:54:39 +0000 |
| commit | d7b11178c4579f9c109c77609ef60dd0d6448598 (patch) | |
| tree | 325f67f3de1acf3c96827888275b367428efc805 /gcc | |
| parent | ba27a39d379b3ac69bd81944b65a99a0f02f240d (diff) | |
| download | gcc-d7b11178c4579f9c109c77609ef60dd0d6448598.zip gcc-d7b11178c4579f9c109c77609ef60dd0d6448598.tar.gz gcc-d7b11178c4579f9c109c77609ef60dd0d6448598.tar.bz2 | |
Symbol tables are insert only.
* cp-tree.h (default_hash_traits <lang_identifier *>): Don't
derive from pointer_hash. Make undeletable.
From-SVN: r249266
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/cp-tree.h | 8 |
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 2d7ee17..7f9ddb0 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,5 +1,9 @@ 2017-06-16 Nathan Sidwell <nathan@acm.org> + Symbol tables are insert only. + * cp-tree.h (default_hash_traits <lang_identifier *>): Don't + derive from pointer_hash. Make undeletable. + * class.c (resort_type_method_vec): Avoid potential unsigned overflow. diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h index c56e59c..6c236ae 100644 --- a/gcc/cp/cp-tree.h +++ b/gcc/cp/cp-tree.h @@ -550,7 +550,7 @@ identifier_p (tree t) template <> struct default_hash_traits <lang_identifier *> - : pointer_hash <tree_node>, ggc_remove <tree> + : pointer_hash <tree_node> { /* Use a regular tree as the type, to make using the hash table simpler. We'll get dynamic type checking with the hash function @@ -558,10 +558,14 @@ struct default_hash_traits <lang_identifier *> GTY((skip)) typedef tree value_type; GTY((skip)) typedef tree compare_type; - static hashval_t hash (const value_type &id) + static hashval_t hash (const value_type id) { return IDENTIFIER_HASH_VALUE (id); } + + /* Nothing is deletable. Everything is insertable. */ + static bool is_deleted (value_type) { return false; } + static void remove (value_type) { gcc_unreachable (); } }; /* In an IDENTIFIER_NODE, nonzero if this identifier is actually a |