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Re: lib/49990: libc++ fails to build with g++ 5.1 due to the following types of errors:



On 23/06/15 10:35, Joerg Sonnenberger wrote:
The following reply was made to PR lib/49990; it has been noted by GNATS.

From: Joerg Sonnenberger <joerg%britannica.bec.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc:
Subject: Re: lib/49990: libc++ fails to build with g++ 5.1 due to the
  following types of errors:
Date: Tue, 23 Jun 2015 12:32:32 +0200

  On Sat, Jun 20, 2015 at 11:15:00PM +0000, drakain%gmail.com@localhost wrote:
  > --- rt_exception.o ---
  > rt_exception.cc:679:43: error: declaration of 'void* __cxa_begin_catch(void*)' has a different exception specifier
  >  extern "C" void *__cxa_begin_catch(void *e);
  >                                            ^
  > rt_exception.cc:608:9: error: from previous declaration 'void* __cxa_begin_catch(void*) throw ()'
  >    catch(...)

  Frankly, this smells like a GCC bug. It should not force exception
  specifiers onto us, especially as adding them results in a runtime
  penalty.

Any possibility of a workaround? I guess libc++ upstream would also be interested in the problem (assuming they didn't already fix it).

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