dump_printf: add "%C" for dumping cgraph_node *

This patch implements support for %C in dump_printf for dumping
cgraph_node *.
(I would have preferred to have a code for printing symtab_node *
and both subclasses, but there doesn't seem to be a good way for
-Wformat to handle inheritance, so, failing that, I went with
this approach).

gcc/c-family/ChangeLog:
	* c-format.c (local_cgraph_node_ptr_node): New variable.
	(gcc_dump_printf_char_table): Add entry for %C.
	(get_pointer_to_named_type): New function, taken from the handling
	code for "gimple *" from...
	(init_dynamic_diag_info): ...here.  Add handling for
	"cgraph_node *".
	* c-format.h (T_CGRAPH_NODE): New.

gcc/ChangeLog:
	* dump-context.h (ASSERT_IS_CGRAPH_NODE): New macro.
	* dumpfile.c (make_item_for_dump_cgraph_node): Move to before...
	(dump_pretty_printer::decode_format): Implement "%C" for
	cgraph_node *.
	(selftest::test_capture_of_dump_calls): Rename "where" to
	"stmt_loc".  Convert test_decl to a function decl and set its
	location.  Add a symbol_table_test RAII instance and a
	cgraph_node, using it to test "%C" and dump_symtab_node.

gcc/testsuite/ChangeLog:
	* gcc.dg/format/gcc_diag-10.c (cgraph_node): New typedef.
	(test_dump): Add testing of %C.

From-SVN: r265918

1 files changed, 3 insertions, 2 deletions

diff --git a/gcc/testsuite/gcc.dg/format/gcc_diag-10.c b/gcc/testsuite/gcc.dg/format/gcc_diag-10.c
index 2f6a002a47f..97a1993dc8f 100644
--- a/gcc/testsuite/gcc.dg/format/gcc_diag-10.c
+++ b/gcc/testsuite/gcc.dg/format/gcc_diag-10.c
@@ -20,7 +20,7 @@ typedef union tree_node *tree;
 typedef struct gimple gimple;
 
 /* Likewise for gimple.  */
-typedef struct gimple gimple;
+typedef struct cgraph_node cgraph_node;
 
 #define FORMAT(kind) __attribute__ ((format (__gcc_## kind ##__, 1, 2)))
 
@@ -162,7 +162,7 @@ void test_cxxdiag (tree t, gimple *gc)
   cxxdiag ("%<%X%>", t);
 }
 
-void test_dump (tree t, gimple *stmt)
+void test_dump (tree t, gimple *stmt, cgraph_node *node)
 {
   dump ("%<");   /* { dg-warning "unterminated quoting directive" } */
   dump ("%>");   /* { dg-warning "unmatched quoting directive " } */
@@ -182,4 +182,5 @@ void test_dump (tree t, gimple *stmt)
   dump ("%E", stmt);
   dump ("%T", t);
   dump ("%G", stmt);
+  dump ("%C", node);
 }