[src/trunk]: src/usr.bin/make make(1): reduce scope of cp in meta_oodate

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

details:   https://anonhg.NetBSD.org/src/rev/b87dc2e6a6f7
branches:  trunk
changeset: 1017300:b87dc2e6a6f7
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Dec 20 22:12:36 2020 +0000

description:
make(1): reduce scope of cp in meta_oodate

That function is way too long (550 lines) and has too creative variable
names such as fname, fname1, fname2, fname3.

diffstat:

 usr.bin/make/meta.c |  22 ++++++++++++----------
 1 files changed, 12 insertions(+), 10 deletions(-)

diffs (57 lines):

diff -r f572aa90f5de -r b87dc2e6a6f7 usr.bin/make/meta.c
--- a/usr.bin/make/meta.c       Sun Dec 20 22:02:54 2020 +0000
+++ b/usr.bin/make/meta.c       Sun Dec 20 22:12:36 2020 +0000
@@ -1,4 +1,4 @@
-/*      $NetBSD: meta.c,v 1.162 2020/12/20 22:02:54 rillig Exp $ */
+/*      $NetBSD: meta.c,v 1.163 2020/12/20 22:12:36 rillig Exp $ */
 
 /*
  * Implement 'meta' mode.
@@ -1076,7 +1076,6 @@
     FStr dname;
     const char *tname;
     char *p;
-    char *cp;
     char *link_src;
     char *move_target;
     static size_t cwdlen = 0;
@@ -1296,13 +1295,15 @@
                     * the src as for 'R'ead
                     * and the target as for 'W'rite.
                     */
-                   cp = p;             /* save this for a second */
-                   /* now get target */
-                   if (strsep(&p, " ") == NULL)
-                       continue;
-                   CHECK_VALID_META(p);
-                   move_target = p;
-                   p = cp;
+                   {
+                       char *cp = p;   /* save this for a second */
+                       /* now get target */
+                       if (strsep(&p, " ") == NULL)
+                           continue;
+                       CHECK_VALID_META(p);
+                       move_target = p;
+                       p = cp;
+                   }
                    /* 'L' and 'M' put single quotes around the args */
                    DEQUOTE(p);
                    DEQUOTE(move_target);
@@ -1487,6 +1488,7 @@
                           fname, lineno);
                    oodate = TRUE;
                } else {
+                   const char *cp;
                    char *cmd = cmdNode->datum;
                    Boolean hasOODATE = FALSE;
 
@@ -1573,7 +1575,7 @@
        }
     } else {
        if (writeMeta && (metaMissing || (gn->type & OP_META))) {
-           cp = NULL;
+           const char *cp = NULL;
 
            /* if target is in .CURDIR we do not need a meta file */
            if (gn->path && (cp = strrchr(gn->path, '/')) && cp > gn->path) {