* tree.h (TYPE_CACHED_VALUES_P): New.

	(TYPE_CACHED_VALUES): New.
	(TYPE_ORIG_SIZE_TYPE): Adjust.
	* tree.def (INTEGER_CST): Update documentation.
	* tree.c: Inlcude params.h.
	(build_int_cst): Cache small values.
	(build_type_copy): Do not copy the value cache.
	* c-common.c (c_common_nodes_and_builtins): Add comment, remove
	unneeded zeroing.
	* c-typeck.c (build_c_cast): Add comment about OVERFLOW setting.
	* expmed.c (const_mult_add_overflow_p): Clear type copy's value
	cache.
	* fold-const.c (force_fit_type): Copy value when setting
	overflows.
	(int_const_binop): Likewise.
	* stor-layout.c: Include params.h
	(set_sizetype): Create values cache.
	(fixup_unsigned_type): Set UNSIGNED_P before caching any values.
	* params.def (PARAM_INTEGER_SHARE_LIMIT): New.
	* params.h (INTEGER_SHARE_LIMIT): New.
	* Makefile.in (tree.o, stor-layout.o): Depend on PARAMS_H.

	* cp/decl.c (finish_enum): Do not copy value node early, copy
	later.
	* cp/lex.c (cxx_init): Force null_node to be unique.

	* java/parse.h (JAVA_RADIX10_FLAG): Rename to ...
	(JAVA_NOT_RADIX10_FLAG): ... here.  Invert meaning.
	* java/lex.c (do_java_lex): Adjust.
	(error_if_numeric_overflow): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86247 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 2 deletions

diff --git a/gcc/cp/lex.c b/gcc/cp/lex.c
index c44e7c0863b..fe220f2ae24 100644
--- a/gcc/cp/lex.c
+++ b/gcc/cp/lex.c
@@ -354,8 +354,10 @@ cxx_init (void)
 
   cxx_init_decl_processing ();
 
-  /* Create the built-in __null node.  */
-  null_node = build_int_cst (c_common_type_for_size (POINTER_SIZE, 0), 0, 0);
+  /* Create the built-in __null node.  It is important that this is
+     not shared. */
+  null_node = make_node (INTEGER_CST);
+  TREE_TYPE (null_node) = c_common_type_for_size (POINTER_SIZE, 0);
   ridpointers[RID_NULL] = null_node;
 
   interface_unknown = 1;