re PR testsuite/48506 (ssa-ccp-17.c = g.i fails)

	PR testsuite/48506
	* gcc.dg/tree-ssa/ssa-ccp-17.c: Robustify against ports that
	default to fno-common.

From-SVN: r172218

gcc/testsuite/ChangeLog

+2011-04-08  Mike Stump  <mikestump@comcast.net>
+
+	PR testsuite/48506
+	* gcc.dg/tree-ssa/ssa-ccp-17.c: Robustify against ports that
+	default to fno-common.
+
 2011-04-08  Georg-Johann Lay  <avr@gjlay.de>
 
 	* gcc.dg/sibcall-3.c: Don't xfail on AVR.

gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-17.c

@@ -18,7 +18,7 @@ int bar(void)
   return ((struct Foo *)p)->i;
 }
 
-const struct Foo g;
+extern const struct Foo g;
 
 int foobar(void)
 {