[src/trunk]: src/usr.bin/make make(1): save a few memory allocations in varia...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f3255935fa77
branches:  trunk
changeset: 948224:f3255935fa77
user:      rillig <rillig%NetBSD.org@localhost>
date:      Mon Dec 21 00:30:13 2020 +0000

description:
make(1): save a few memory allocations in variable expressions

diffstat:

 usr.bin/make/var.c |  12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diffs (54 lines):

diff -r 04bd9ec124d2 -r f3255935fa77 usr.bin/make/var.c
--- a/usr.bin/make/var.c        Mon Dec 21 00:20:58 2020 +0000
+++ b/usr.bin/make/var.c        Mon Dec 21 00:30:13 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: var.c,v 1.758 2020/12/21 00:20:58 rillig Exp $ */
+/*     $NetBSD: var.c,v 1.759 2020/12/21 00:30:13 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -131,7 +131,7 @@
 #include "metachar.h"
 
 /*     "@(#)var.c      8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.758 2020/12/21 00:20:58 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.759 2020/12/21 00:30:13 rillig Exp $");
 
 typedef enum VarFlags {
        VAR_NONE        = 0,
@@ -2432,7 +2432,7 @@
        if (st->eflags & VARE_WANTRES)
                st->newVal = FStr_InitOwn(Cmd_Exec(cmd, &errfmt));
        else
-               st->newVal = FStr_InitOwn(bmake_strdup(""));
+               st->newVal = FStr_InitRefer("");
        if (errfmt != NULL)
                Error(errfmt, cmd);     /* XXX: why still return AMR_OK? */
        free(cmd);
@@ -2899,7 +2899,7 @@
 
        if (estr[0] == '#' && estr[1] == '\0') { /* Found ":[#]" */
                if (st->oneBigWord) {
-                       st->newVal = FStr_InitOwn(bmake_strdup("1"));
+                       st->newVal = FStr_InitRefer("1");
                } else {
                        Buffer buf;
 
@@ -3177,7 +3177,7 @@
                }
        }
        free(val);
-       st->newVal = FStr_InitOwn(bmake_strdup(""));
+       st->newVal = FStr_InitRefer("");
        return AMR_OK;
 }
 
@@ -3303,7 +3303,7 @@
                        if (errfmt != NULL)
                                Error(errfmt, val);
                } else
-                       st->newVal = FStr_InitOwn(bmake_strdup(""));
+                       st->newVal = FStr_InitRefer("");
                *pp = p + 2;
                return AMR_OK;
        } else