From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 13 May 2015 13:32:31 +0000 (+0100)
Subject: * include/std/complex (polar): Check for negative rho (LWG 2459).
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d0cad9fef03ed3cac4b33cfdaa0a33cacb1a8af4;p=gcc.git

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

From-SVN: r223159
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index a22a56524f8..af4d5be54c6 100644
--- 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 585683c6f93..f2a6cf93487 100644
--- 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>