re PR libstdc++/68276 (ios_base::_M_grow_words should use new (std::nothrow))

2015-12-18  Ville Voutilainen  <ville.voutilainen@gmail.com>

	PR libstdc++/68276

	* src/c++11/ios.cc (_M_grow_words): Use nothrow new.
	* testsuite/27_io/ios_base/storage/11584.cc: Adjust.

From-SVN: r231819

libstdc++-v3/ChangeLog

+2015-12-18  Ville Voutilainen  <ville.voutilainen@gmail.com>
+
+	PR libstdc++/68276
+
+	* src/c++11/ios.cc (_M_grow_words): Use nothrow new.
+	* testsuite/27_io/ios_base/storage/11584.cc: Adjust.
+
 2015-12-18  Andris Pavenis  <andris.pavenis@iki.fi>
 
 	* config/os/djgpp/error_constants.h: update according to DJGPP errno

libstdc++-v3/src/c++11/ios.cc

@@ -121,9 +121,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	if (__ix < numeric_limits<int>::max())
 	  {
 	    __newsize = __ix + 1;
-	    __try
-	      { __words = new _Words[__newsize]; }
-	    __catch(const std::bad_alloc&)
+	    __words = new (std::nothrow) _Words[__newsize];
+	    if (!__words)
 	      {
 		_M_streambuf_state |= badbit;
 		if (_M_streambuf_state & _M_exception)

libstdc++-v3/testsuite/27_io/ios_base/storage/11584.cc

@@ -26,14 +26,14 @@
 
 int new_fails;
 
-void* operator new(std::size_t n) throw (std::bad_alloc)
+void* operator new(std::size_t n, const std::nothrow_t&) throw()
 {
   if (new_fails)
-    throw std::bad_alloc();  
+    return 0;
   return malloc(n);
 }
-void* operator new[] (std::size_t n) throw (std::bad_alloc)
-{ return operator new(n); }
+void* operator new[] (std::size_t n, const std::nothrow_t& ntt) throw()
+{ return operator new(n, ntt); }
 
 void operator delete (void *p) throw() { free(p); }
 void operator delete[] (void *p) throw() { operator delete(p); }