bc: simplify zdc_parse_string()

function                                             old     new   delta
bc_program_index                                      64      66      +2
zdc_parse_expr                                       671     656     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-15)             Total: -13 bytes
   text	   data	    bss	    dec	    hex	filename
 981667	    485	   7296	 989448	  f1908	busybox_old
 981655	    485	   7296	 989436	  f18fc	busybox_unstripped

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

1 files changed, 3 insertions, 5 deletions

diff --git a/miscutils/bc.c b/miscutils/bc.c
index 58734cf9c..1fb1b00b3 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -4798,8 +4798,6 @@ static BC_STATUS zbc_parse_expr(BcParse *p, uint8_t flags, BcParseNext next)
 
 #if ENABLE_DC
 
-#define DC_PARSE_BUF_LEN ((int) (sizeof(uint32_t) * CHAR_BIT))
-
 static BC_STATUS zdc_parse_register(BcParse *p)
 {
         BcStatus s;
@@ -4816,11 +4814,11 @@ static BC_STATUS zdc_parse_register(BcParse *p)
 
 static BC_STATUS zdc_parse_string(BcParse *p)
 {
-        char *str, *name, b[DC_PARSE_BUF_LEN + 1];
+        char *str, *name;
         size_t idx, len = G.prog.strs.len;
 
-        sprintf(b, "%0*zu", DC_PARSE_BUF_LEN, len);
-        name = xstrdup(b);
+//why pad to 32 zeros??
+        name = xasprintf("%032lu", (unsigned long)len);
 
         str = xstrdup(p->l.t.v.v);
         bc_parse_push(p, BC_INST_STR);