bc: preparation to stop using p->exits when parsing if()

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

diff --git a/miscutils/bc.c b/miscutils/bc.c
index 9f40a551ed6df219fd9f33e1c3c16a9b0a432313..ad716fac3cf9a7a8f46632dbf7be89ad2273009d 100644 (file)
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -4141,15 +4141,17 @@ static BC_STATUS zbc_parse_if(BcParse *p)
 
        dbg_lex("%s:%d in if after stmt: p->l.t.t:%d", __func__, __LINE__, p->l.t.t);
        if (p->l.t.t == BC_LEX_KEY_ELSE) {
+               BcInstPtr ip2;
+
                s = zbc_lex_next_and_skip_NLINE(&p->l);
                if (s) RETURN_STATUS(s);
 
-               ip.idx = p->func->labels.len;
-               ip.func = ip.len = 0;
+               ip2.idx = p->func->labels.len;
+               ip2.func = ip.len = 0;
 
                dbg_lex("%s:%d after if() body: BC_INST_JUMP to %d", __func__, __LINE__, ip.idx);
                bc_parse_push(p, BC_INST_JUMP);
-               bc_parse_pushIndex(p, ip.idx);
+               bc_parse_pushIndex(p, ip2.idx);
 
                ipp = bc_vec_top(&p->exits);
                label = bc_vec_item(&p->func->labels, ipp->idx);
@@ -4157,8 +4159,8 @@ static BC_STATUS zbc_parse_if(BcParse *p)
                *label = p->func->code.len;
                bc_vec_pop(&p->exits);
 
-               bc_vec_push(&p->exits, &ip);
-               bc_vec_push(&p->func->labels, &ip.idx);
+               bc_vec_push(&p->exits, &ip2);
+               bc_vec_push(&p->func->labels, &ip2.idx);
 
                s = zbc_parse_stmt(p);
                if (s) RETURN_STATUS(s);