pr68078.f90: Run on x86_64_*_linux* only.

2016-09-21  Louis Krupp  <louis.krupp@zoho.com>

	* gfortran.dg/pr68078.f90: Run on x86_64_*_linux* only.

From-SVN: r240304

gcc/testsuite/ChangeLog

+2016-09-21  Louis Krupp  <louis.krupp@zoho.com>
+
+	* gfortran.dg/pr68078.f90: Run on x86_64_*_linux* only.
+
 2016-09-21  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/77648

gcc/testsuite/gfortran.dg/pr68078.f90

-! { dg-do run }
-! { dg-xfail-run-if "malloc issuing error messages" { *-*-darwin*  } }
+! { dg-do run { target x86_64-*-linux* } }
 ! { dg-additional-sources set_vm_limit.c }
+!
+! This test calls set_vm_limit to set an artificially low address space
+! limit.  set_vm_limit calls setrlimit, which has some portability
+! considerations.  setrlimit gets errors on arm*linux and aarch64*linux,
+! and when the main program calls malloc(), it in turn fails on Darwin.
+! The code being tested is portable, calling ALLOCATED() or ASSOCIATED()
+! to verify that allocation was successful, so the operating assumption
+! is that as long as this test runs on at least one system, we can call
+! it good.
 
 USE :: ISO_C_BINDING !, only: C_INT
 IMPLICIT NONE