introduce ZALLOC{,_N} to replace ALLOC{,_N}+MEMZERO use

Using calloc where possible reduces code and binary sizes.

* include/ruby/ruby.h (ZALLOC, ZALLOC_N): implement
  (Data_Make_Struct, TypedData_Make_Struct):
  ZALLOC replaces ALLOC+memset
* compile.c (iseq_seq_sequence): ZALLOC_N replaces ALLOC_N+MEMZERO
* cont.c (fiber_t_alloc): ZALLOC replaces ALLOC+MEMZERO
* io.c (rb_io_reopen): ditto
* iseq.c (prepare_iseq_build): ditto
* parse.y (new_args_tail_gen, parser_new, ripper_s_allocate): ditto
* re.c (match_alloc): ditto
* variable.c (rb_const_set): ditto
* ext/socket/raddrinfo.c (get_addrinfo): ditto
* ext/strscan/strscan.c (strscan_s_allocate): ditto
* gc.c (rb_objspace_alloc): calloc replaces malloc+MEMZERO

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 4 deletions

diff --git a/gc.c b/gc.c
index ae3f570ad1..f67caa62d7 100644
--- a/gc.c
+++ b/gc.c
@@ -920,8 +920,7 @@ RVALUE_DEMOTE_FROM_OLD(rb_objspace_t *objspace, VALUE obj)
 rb_objspace_t *
 rb_objspace_alloc(void)
 {
-    rb_objspace_t *objspace = malloc(sizeof(rb_objspace_t));
-    memset(objspace, 0, sizeof(*objspace));
+    rb_objspace_t *objspace = calloc(1, sizeof(rb_objspace_t));
     ruby_gc_stress = ruby_initial_gc_stress;
 
     malloc_limit = gc_params.malloc_limit_min;
@@ -1087,13 +1086,12 @@ heap_page_allocate(rb_objspace_t *objspace)
     }
 
     /* assign heap_page entry */
-    page = (struct heap_page *)malloc(sizeof(struct heap_page));
+    page = (struct heap_page *)calloc(1, sizeof(struct heap_page));
     if (page == 0) {
 	aligned_free(page_body);
 	during_gc = 0;
 	rb_memerror();
     }
-    MEMZERO((void*)page, struct heap_page, 1);
 
     page->body = page_body;