* include/std/complex (polar): Check for negative rho (LWG 2459).

From-SVN: r223159

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index a22a565..af4d5be 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,7 @@
 2015-05-13  Jonathan Wakely  <jwakely@redhat.com>
 
+       * include/std/complex (polar): Check for negative rho (LWG 2459).
+
        * include/experimental/tuple (apply): Handle pointers to member (LWG
        2418).
        * include/std/functional (_Mem_fn_base): Make constructors constexpr.

diff --git a/libstdc++-v3/include/std/complex b/libstdc++-v3/include/std/complex
index 585683c..f2a6cf9 100644 (file)
--- a/libstdc++-v3/include/std/complex
+++ b/libstdc++-v3/include/std/complex
@@ -667,7 +667,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   template<typename _Tp>
     inline complex<_Tp>
     polar(const _Tp& __rho, const _Tp& __theta)
-    { return complex<_Tp>(__rho * cos(__theta), __rho * sin(__theta)); }
+    {
+      _GLIBCXX_DEBUG_ASSERT( __rho >= 0 );
+      return complex<_Tp>(__rho * cos(__theta), __rho * sin(__theta));
+    }
 
   template<typename _Tp>
     inline complex<_Tp>