bc: store only index in p->exits, it's the only thing used there

function                                             old     new   delta
zbc_parse_stmt_possibly_auto                        1967    1964      -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3)               Total: -3 bytes
   text	   data	    bss	    dec	    hex	filename
 981937	    485	   7296	 989718	  f1a16	busybox_old
 981934	    485	   7296	 989715	  f1a13	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 5 insertions, 8 deletions

diff --git a/miscutils/bc.c b/miscutils/bc.c
index ca14c1ba7..979d5113d 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -3642,7 +3642,7 @@ static void bc_parse_create(BcParse *p, size_t func)
         memset(p, 0, sizeof(BcParse));
 
         bc_lex_init(&p->l);
-        bc_vec_init(&p->exits, sizeof(BcInstPtr), NULL);
+        bc_vec_init(&p->exits, sizeof(size_t), NULL);
         bc_vec_init(&p->conds, sizeof(size_t), NULL);
         bc_vec_init(&p->ops, sizeof(BcLexType), NULL);
 
@@ -4192,7 +4192,7 @@ static BC_STATUS zbc_parse_while(BcParse *p)
         ip.func = 1;
         ip.len = 0;
 
-        bc_vec_push(&p->exits, &ip);
+        bc_vec_push(&p->exits, &ip.idx);
         bc_vec_push(&p->func->labels, &ip.idx);
 
         s = zbc_parse_expr(p, BC_PARSE_REL, bc_parse_next_rel);
@@ -4294,7 +4294,7 @@ static BC_STATUS zbc_parse_for(BcParse *p)
         ip.func = 1;
         ip.len = 0;
 
-        bc_vec_push(&p->exits, &ip);
+        bc_vec_push(&p->exits, &ip.idx);
         bc_vec_push(&p->func->labels, &ip.idx);
 
         // for(...)<newline>stmt is accepted as well
@@ -4328,14 +4328,11 @@ static BC_STATUS zbc_parse_break_or_continue(BcParse *p, BcLexType type)
         size_t i;
 
         if (type == BC_LEX_KEY_BREAK) {
-                BcInstPtr *ipp;
-
                 if (p->exits.len == 0) // none of the enclosing blocks is a loop
                         RETURN_STATUS(bc_error_bad_token());
-                ipp = bc_vec_top(&p->exits);
-                i = ipp->idx;
+                i = *(size_t*)bc_vec_top(&p->exits);
         } else {
-                i = *((size_t *) bc_vec_top(&p->conds));
+                i = *(size_t*)bc_vec_top(&p->conds);
         }
 
         bc_parse_push(p, BC_INST_JUMP);