This is the mail archive of the mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [patch] Make std::string default constructor conditionally noexcept

On 13/05/15 14:36 +0100, Jonathan Wakely wrote:

Voted into the WP in Lenexa.

We already did the right thing for vector, so only basic_string needs
to change.

Tested powerpc64le-linux, committed to trunk.

Also committed to gcc-5-branch.

commit 634ed6e2d2ea4d69a29a8907044e6f68541d88aa
Author: Jonathan Wakely <>
Date:   Wed May 13 14:21:37 2015 +0100

   	* include/bits/basic_string.h (basic_string::basic_string()): Make
   	noexcept conditional on allocator (LWG 2455).

diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index 3e3eef4..093f502 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -377,7 +377,10 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
       *  @brief  Default constructor creates an empty string.
-      basic_string() _GLIBCXX_NOEXCEPT
+      basic_string()
+#if __cplusplus >= 201103L
+      noexcept(is_nothrow_default_constructible<_Alloc>::value)
      : _M_dataplus(_M_local_data())
      { _M_set_length(0); }

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]