re PR bootstrap/79814 (pass-instances.def:36:14: error:…

re PR bootstrap/79814 (pass-instances.def:36:14: error: ‘*<unknown>.gcc::pass_manager::pass_warn_unused_result_1’ is used uninitialized in this function)

2017-04-24  Richard Biener  <rguenther@suse.de>

	PR bootstrap/79814
	* pass_manager.h (pass_manager::operator new): Remove.
	(pass_manager::operator delete): Likewise.
	* passes.c (pass_manager::operator new): Remove.
	(pass_manager::operator delete): Likewise.
	(pass_manager::pass_manager): Zero individual pass members.

From-SVN: r247089

gcc/ChangeLog

+2017-04-24  Richard Biener  <rguenther@suse.de>
+
+	PR bootstrap/79814
+	* pass_manager.h (pass_manager::operator new): Remove.
+	(pass_manager::operator delete): Likewise.
+	* passes.c (pass_manager::operator new): Remove.
+	(pass_manager::operator delete): Likewise.
+	(pass_manager::pass_manager): Zero individual pass members.
+
 2017-04-23  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/70799

gcc/pass_manager.h

@@ -47,9 +47,6 @@ class context;
 class pass_manager
 {
 public:
-  void *operator new (size_t sz);
-  void operator delete (void *ptr);
-
   pass_manager (context *ctxt);
   ~pass_manager ();
 

gcc/passes.c

@@ -1528,19 +1528,6 @@ pass_manager::register_pass (struct register_pass_info *pass_info)
 				        -> all_passes
 */
 
-void *
-pass_manager::operator new (size_t sz)
-{
-  /* Ensure that all fields of the pass manager are zero-initialized.  */
-  return xcalloc (1, sz);
-}
-
-void
-pass_manager::operator delete (void *ptr)
-{
-  free (ptr);
-}
-
 pass_manager::pass_manager (context *ctxt)
 : all_passes (NULL), all_small_ipa_passes (NULL), all_lowering_passes (NULL),
   all_regular_ipa_passes (NULL),
@@ -1549,6 +1536,21 @@ pass_manager::pass_manager (context *ctxt)
 {
   opt_pass **p;
 
+  /* Zero-initialize pass members.  */
+#define INSERT_PASSES_AFTER(PASS)
+#define PUSH_INSERT_PASSES_WITHIN(PASS)
+#define POP_INSERT_PASSES()
+#define NEXT_PASS(PASS, NUM) PASS ## _ ## NUM = NULL
+#define NEXT_PASS_WITH_ARG(PASS, NUM, ARG) NEXT_PASS (PASS, NUM)
+#define TERMINATE_PASS_LIST(PASS)
+#include "pass-instances.def"
+#undef INSERT_PASSES_AFTER
+#undef PUSH_INSERT_PASSES_WITHIN
+#undef POP_INSERT_PASSES
+#undef NEXT_PASS
+#undef NEXT_PASS_WITH_ARG
+#undef TERMINATE_PASS_LIST
+
   /* Initialize the pass_lists array.  */
 #define DEF_PASS_LIST(LIST) pass_lists[PASS_LIST_NO_##LIST] = &LIST;
   GCC_PASS_LISTS