Add a testcase for warning on common symbol in archive.

2011-06-07  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-elf/elf.exp: Build symbol3.a and symbol3w.a.

	* ld-elf/symbol3.s: New.
	* ld-elf/symbol3w.s: Likewise.
	* ld-elf/warn3.d: Likewise.

ld/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2011-06-07  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ld-elf/elf.exp: Build symbol3.a and symbol3w.a.
+
+	* ld-elf/symbol3.s: New.
+	* ld-elf/symbol3w.s: Likewise.
+	* ld-elf/warn3.d: Likewise.
+
 2011-06-02  Nathan Sidwell  <nathan@codesourcery.com>
 
 	Adjust tests for zero offset formatting.

ld/testsuite/ld-elf/elf.exp

@@ -40,6 +40,15 @@ if { [is_remote host] } then {
     remote_download host merge.ld
 }
 
+run_ld_link_tests {
+    {"Build symbol3.a"
+     "" ""
+     {symbol3.s} {} "symbol3.a"}
+    {"Build symbol3w.a"
+     "" ""
+     {symbol3w.s} {} "symbol3w.a"}
+}
+
 set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
 foreach t $test_list {
     # We need to strip the ".d", but can leave the dirname.

ld/testsuite/ld-elf/symbol3.s

@@ -0,0 +1 @@
+	 .comm badsym,4

ld/testsuite/ld-elf/symbol3w.s

@@ -0,0 +1,4 @@
+	.data
+	.dc.a	badsym
+        .section        .gnu.warning.badsym,"",%progbits
+        .string "badsym warning"

ld/testsuite/ld-elf/warn3.d

@@ -0,0 +1,15 @@
+#source: start.s
+#ld: tmpdir/symbol3w.o tmpdir/symbol3.a 
+#warning: .*: warning: badsym warning$
+#readelf: -s
+#notarget: "sparc64-*-solaris2*" "sparcv9-*-solaris2*"
+#xfail: arc-*-* d30v-*-* dlx-*-* fr30-*-* frv-*-elf i860-*-* i960-*-*
+#xfail: iq*-*-* mn10200-*-* moxie-*-* msp*-*-* mt-*-* or32-*-* pj*-*-*
+# if not using elf32.em, you don't get fancy section handling
+
+# Check that warnings are generated for the symbols in .gnu.warning
+# construct and that the symbol still appears as expected.
+
+#...
+ +[0-9]+: +[0-9a-f]+ +4 +OBJECT +GLOBAL +DEFAULT +[1-9] badsym
+#pass