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[PATCH RFA]: Look for /proc/sys/kernel/randomize_va_space

In Fedora Core 4 the file which used to be named
/proc/sys/kernel/exec-shield-randomize is now called
/proc/sys/kernel/randomize_va_space.  Apparently the name changed as
the functionality was taken into the mainline Linux kernel.  In
host-linux.c, in some cases, we try to read that file to see if
virtual addresses are randomized on the host system.  It's not a
common case any more, because the TRY_EMPTY_VM_SPACE code will
normally work.  But as long as we have the case, we should check the
right file.

This patch was tested with bootstrap and testsuite run on
i686-pc-linux-gnu.  OK for mainline and 4.0?

This patch will be appropriate for 3.4 after
is tested successfully on Solaris.



2005-07-30  Ian Lance Taylor  <>

	* config/host-linux.c (linux_gt_pch_get_address): If we can't open
	exec-shield-randomize, try randomize_va_space.

Index: config/host-linux.c
RCS file: /cvs/gcc/gcc/gcc/config/host-linux.c,v
retrieving revision 1.10
diff -p -u -r1.10 host-linux.c
--- config/host-linux.c	12 Jul 2005 20:59:00 -0000	1.10
+++ config/host-linux.c	31 Jul 2005 00:50:01 -0000
@@ -116,6 +116,8 @@ linux_gt_pch_get_address (size_t size, i
   /* If we didn't, then we need to look to see if randomization is on.  */
   f = fopen ("/proc/sys/kernel/exec-shield-randomize", "r");
+  if (f == NULL)
+    f = fopen ("/proc/sys/kernel/randomize_va_space", "r");
   randomize_on = false;
   if (f != NULL)

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