Port to platforms where rlim_max < 0

* src/emacs.c (main): Do not treat a negative rlim_max as a limit;
this can happen if a special value like RLIM_INFINITY is negative.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/emacs.c b/src/emacs.c
index bdcebbe1637..b8ba86f7356 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -851,11 +851,14 @@ main (int argc, char **argv)
           /* Round the new limit to a page boundary; this is needed
              for Darwin kernel 15.4.0 (see Bug#23622) and perhaps
              other systems.  Do not shrink the stack and do not exceed
-             rlim_max.  Don't worry about values like RLIM_INFINITY
-             since in practice they are so large that the code does
-             the right thing anyway.  */
+             rlim_max.  Don't worry about exact values of
+             RLIM_INFINITY etc. since in practice when they are
+             nonnegative they are so large that the code does the
+             right thing anyway.  */
           long pagesize = getpagesize ();
-          newlim = min (newlim + pagesize - 1, rlim.rlim_max);
+          newlim += pagesize - 1;
+          if (0 <= rlim.rlim_max && rlim.rlim_max < newlim)
+            newlim = rlim.rlim_max;
           newlim -= newlim % pagesize;
 
           if (pagesize <= newlim - lim)