GCC 5.1 Released  
   
  Thursday, April 23, 2015  
  The GNU project and the GCC developers jump the 5.0 and announce the release of GCC 5.1.

Caveats:
The default mode for C is now -std=gnu11 instead of -std=gnu89.
The C++ runtime library (libstdc++) uses a new ABI by default .
The Graphite framework for loop optimizations no longer requires the CLooG library, only ISL version 0.14 (recommended) or 0.12.2. .
The non-standard C++0x type traits has_trivial_default_constructor, has_trivial_copy_constructor and has_trivial_copy_assign have been deprecated and will be removed in a future version. The standard C++11 traits is_trivially_default_constructible, is_trivially_copy_constructible and is_trivially_copy_assignable should be used instead.

You can get more details in the distribution page.
 
     
 
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