[libstdc++, committed] fix PR65909

[libstdc++, committed] fix PR65909

[Sandra Loosemore]

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This patch works around a libstdc++ testsuite issue:  the generated 
program that tests for the availability of named locales dereferences 
invalid pointers on targets that don't allow command-line arguments to 
be passed.  (In particular, I ran into this with a simulator for an 
embedded target that produces a ton of verbose error messages when it 
hits an invalid memory reference.)  Jonathan already approved the fix in 
the issue, so I've gone ahead and checked it in.

-Sandra


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2015-04-27  Sandra Loosemore  <sandra@codesourcery.com>

	PR libstdc++/65909

	libstdc++-v3/
	* testsuite/lib/libstdc++.exp (check_v3_target_namedlocale):
	Make the generated test program fail gracefully if the target
	doesn't	support passing command-line arguments.

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Index: libstdc++-v3/testsuite/lib/libstdc++.exp
===================================================================
--- libstdc++-v3/testsuite/lib/libstdc++.exp	(revision 222496)
+++ libstdc++-v3/testsuite/lib/libstdc++.exp	(working copy)
@@ -901,6 +901,11 @@ proc check_v3_target_namedlocale { args 
       puts $f "using namespace std;"	
       puts $f "int main (int argc, char** argv)"
       puts $f "{"
+      puts $f "  if (argc < 2)"
+      puts $f "  {"
+      puts $f "    printf(\"locale support test not supported\\n\");"
+      puts $f "    return 1;"
+      puts $f "  }"	
       puts $f "  try"	
       puts $f "  {"
       puts $f "    locale(*(argv + 1));"