[bug #36844] Private variables can still leak to dependencies if += is used

[Brian Vandenberg]

URL:
  <http://savannah.gnu.org/bugs/?36844>

                 Summary: Private variables can still leak to dependencies if
+= is used
                 Project: make
            Submitted by: phantal
            Submitted on: Fri 13 Jul 2012 06:15:20 PM GMT
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 3.82
        Operating System: Any
           Fixed Release: None
           Triage Status: None

    _______________________________________________________

Details:

01..ASDF := global
02..
03..${T2}%: private ASDF :=
04..
05..     A: private ASDF += A1
06..${T1}B: private ASDF += B1
07..${T1}C: private ASDF += C1
08..
09..${T1}C: private ASDF += C2
10..${T1}B: private ASDF += B2
11..${T1}A: private ASDF += A2
12..
13..A:B
14..B:C
15..
16..A B C:
17..  @echo "address@hidden: ${ASDF}"


To test this:

# Comment out lines 3 & 6-11; this will demonstrate how private variables
should behave
gmake T1='#' T2='#'
C: global
B: global
A: global A1 A2
# Comment out just line 3; this will demonstrate the problem; targets B & C
inherit changes from things that depend on them.
C: global A1 A2 B1 B2 C1 C2
B: global A1 A2 B1 B2
A: global A1 A2
# Don't comment out any lines; adding a pattern rule to wipe out ASDF for all
targets is a reasonable work-around until this problem gets fixed:
gmake
C: global C1 C2
B: global B1 B2
A: global A1 A2




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?36844>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/