[bug #48009] Increased stack rlimit is inherited by the subprocesses to make when make restarts

[Jeremy Devenport]

URL:
  <http://savannah.gnu.org/bugs/?48009>

                 Summary: Increased stack rlimit is inherited by the
subprocesses to make when make restarts
                 Project: make
            Submitted by: jeremyd
            Submitted on: Wed 25 May 2016 12:00:19 PM GMT
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: SCM
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

The fix for https://savannah.gnu.org/bugs/?22010 is incomplete. When make
restarts itself due to an updated makefile it re-exec's itself inheriting the
increased stack rlimit but without remembering the original saved values so
the re-exec'd make will run its subprocesses with the increased stack limit.

This sequence of commands demonstrates the bug:

$ ulimit -H -s  
32768
$ ulimit -s     
4096
$ cat Makefile
include foo.inc
foo.inc: bar.txt
        touch $@
show-stack-rlimit:
        ulimit -s
$ echo > foo.inc
$ echo > bar.txt
$ make show-stack-rlimit
touch foo.inc
ulimit -s
32768    <-- inherited the stack increase to the hard limit
$ make show-stack-rlimit 
ulimit -s
4096

The attached patch resolves the issue for me.



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File Attachments:


-------------------------------------------------------
Date: Wed 25 May 2016 12:00:19 PM GMT  Name: stack-rlimit-make-restart.patch 
Size: 856B   By: jeremyd

<http://savannah.gnu.org/bugs/download.php?file_id=37259>

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