locale_classes.h: Simplify RTTI checks.

2007-12-17  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* include/bits/locale_classes.h: Simplify RTTI checks.

From-SVN: r131020

libstdc++-v3/ChangeLog

 2007-12-17  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
+	* include/bits/locale_classes.h: Simplify RTTI checks.
+
+2007-12-17  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
 	* docs/html/test.html: Fix paths and notes on running subset of tests.
 	* docs/html/ext/parallel_mode.html: Fix markup typos.
 	* docs/html/ext/pb_ds/index.html: Likewise.

libstdc++-v3/include/bits/locale_classes.h

@@ -579,17 +579,8 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
     {
       const size_t __i = _Facet::id._M_id();
       const locale::facet** __facets = __loc._M_impl->_M_facets;
-      bool __b(false);
-      try 
-	{
-	  if (__i < __loc._M_impl->_M_facets_size
-	      && dynamic_cast<const _Facet*>(__facets[__i]) != NULL)
-	    __b = true;
-	    
-	}
-      catch (...)
-	{ }
-      return __b;
+      return __i < __loc._M_impl->_M_facets_size
+	      && dynamic_cast<const _Facet*>(__facets[__i]) != NULL;
     }
 
   /**
@@ -611,8 +602,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
     {
       const size_t __i = _Facet::id._M_id();
       const locale::facet** __facets = __loc._M_impl->_M_facets;
-      if (__i >= __loc._M_impl->_M_facets_size
-	  || dynamic_cast<const _Facet*>(__facets[__i]) == NULL)
+      if (__i >= __loc._M_impl->_M_facets_size || __facets[__i] == NULL)
         __throw_bad_cast();
       return dynamic_cast<const _Facet&>(*__facets[__i]);
     }