[src/trunk]: src/usr.bin/make PR/52159: Jamie Landeg-Jones: Don't try to expa...

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

details:   https://anonhg.NetBSD.org/src/rev/9266986db00e
branches:  trunk
changeset: 823131:9266986db00e
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Apr 13 13:55:23 2017 +0000

description:
PR/52159: Jamie Landeg-Jones: Don't try to expand $'s in paths or system
variables. Only expand them ${MAKE} variable values.

diffstat:

 usr.bin/make/main.c |  38 ++++++++++++++++++++------------------
 1 files changed, 20 insertions(+), 18 deletions(-)

diffs (87 lines):

diff -r 8d34f319f176 -r 9266986db00e usr.bin/make/main.c
--- a/usr.bin/make/main.c       Thu Apr 13 10:37:36 2017 +0000
+++ b/usr.bin/make/main.c       Thu Apr 13 13:55:23 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: main.c,v 1.259 2017/03/26 17:16:03 sjg Exp $   */
+/*     $NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos Exp $      */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,7 +69,7 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: main.c,v 1.259 2017/03/26 17:16:03 sjg Exp $";
+static char rcsid[] = "$NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
@@ -81,7 +81,7 @@
 #if 0
 static char sccsid[] = "@(#)main.c     8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: main.c,v 1.259 2017/03/26 17:16:03 sjg Exp $");
+__RCSID("$NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -691,22 +691,15 @@
 Main_SetObjdir(const char *fmt, ...)
 {
        struct stat sb;
-       char *p, *path;
-       char buf[MAXPATHLEN + 1], pbuf[MAXPATHLEN + 1];
+       char *path;
+       char buf[MAXPATHLEN + 1];
        Boolean rc = FALSE;
        va_list ap;
 
        va_start(ap, fmt);
-       vsnprintf(path = pbuf, MAXPATHLEN, fmt, ap);
+       vsnprintf(path = buf, MAXPATHLEN, fmt, ap);
        va_end(ap);
 
-       /* expand variable substitutions */
-       if (strchr(path, '$') != 0) {
-               snprintf(buf, MAXPATHLEN, "%s", path);
-               path = p = Var_Subst(NULL, buf, VAR_GLOBAL, VARF_WANTRES);
-       } else
-               p = NULL;
-
        if (path[0] != '/') {
                snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path);
                path = buf;
@@ -729,19 +722,28 @@
                }
        }
 
-       free(p);
        return rc;
 }
 
 static Boolean
 Main_SetVarObjdir(const char *var, const char *suffix)
 {
-       char *p1, *path;
-       if ((path = Var_Value(var, VAR_CMD, &p1)) == NULL)
+       char *p, *path, *xpath;
+
+       if ((path = Var_Value(var, VAR_CMD, &p)) == NULL)
                return FALSE;
 
-       (void)Main_SetObjdir("%s%s", path, suffix);
-       free(p1);
+       /* expand variable substitutions */
+       if (strchr(path, '$') != 0)
+               xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES);
+       else
+               xpath = path;
+
+       (void)Main_SetObjdir("%s%s", xpath, suffix);
+
+       if (xpath != path)
+               free(xpath);
+       free(p);
        return TRUE;
 }