awk: use "static" tmpvars in main and exit

function                                             old     new   delta
awk_exit                                             103      93     -10
awk_main                                             850     832     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-28)             Total: -28 bytes

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

1 files changed, 5 insertions, 12 deletions

diff --git a/editors/awk.c b/editors/awk.c
index f65449a09..9f5a94037 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -562,6 +562,8 @@ struct globals2 {
         var ptest__tmpvar;
         var awk_printf__tmpvar;
         var as_regex__tmpvar;
+        var exit__tmpvar;
+        var main__tmpvar;
 
         tsplitter exec_builtin__tspl;
 
@@ -638,11 +640,6 @@ static void syntax_error(const char *message)
         bb_error_msg_and_die("%s:%i: %s", g_progname, g_lineno, message);
 }
 
-static void zero_out_var(var *vp)
-{
-        memset(vp, 0, sizeof(*vp));
-}
-
 /* ---- hash stuff ---- */
 
 static unsigned hashidx(const char *name)
@@ -3372,11 +3369,9 @@ static int awk_exit(int r)
         unsigned i;
 
         if (!exiting) {
-                var tv;
                 exiting = TRUE;
                 nextrec = FALSE;
-                zero_out_var(&tv);
-                evaluate(endseq.first, &tv);
+                evaluate(endseq.first, &G.exit__tmpvar);
         }
 
         /* waiting for children */
@@ -3404,7 +3399,6 @@ int awk_main(int argc UNUSED_PARAM, char **argv)
         llist_t *list_e = NULL;
 #endif
         int i;
-        var tv;
 
         INIT_G();
 
@@ -3514,8 +3508,7 @@ int awk_main(int argc UNUSED_PARAM, char **argv)
         newfile("/dev/stdout")->F = stdout;
         newfile("/dev/stderr")->F = stderr;
 
-        zero_out_var(&tv);
-        evaluate(beginseq.first, &tv);
+        evaluate(beginseq.first, &G.main__tmpvar);
         if (!mainseq.first && !endseq.first)
                 awk_exit(EXIT_SUCCESS);
 
@@ -3532,7 +3525,7 @@ int awk_main(int argc UNUSED_PARAM, char **argv)
                         nextrec = FALSE;
                         incvar(intvar[NR]);
                         incvar(intvar[FNR]);
-                        evaluate(mainseq.first, &tv);
+                        evaluate(mainseq.first, &G.main__tmpvar);
 
                         if (nextfile)
                                 break;