[PATCH, testsuite]: Fix PR 65944, FAIL: g++.dg/lto/pr65276: undefined reference to std2::exception::~exception()

[Uros Bizjak]

Hello!

Following patch fixes:

cp_lto_pr65276_1.o: In function `std2::runtime_error::~runtime_error()':^M
pr65276_1.C:(.text._ZN4std213runtime_errorD2Ev[_ZN4std213runtime_errorD5Ev]+0x8):
undefined reference to `std2::exception::~exception()'^M
cp_lto_pr65276_1.o: In function `std2::runtime_error::~runtime_error()':^M
pr65276_1.C:(.text._ZN4std213runtime_errorD0Ev[_ZN4std213runtime_errorD5Ev]+0xc):
undefined reference to `std2::exception::~exception()'^M
cp_lto_pr65276_1.o:(.rodata._ZTVN4std29exceptionE[_ZTVN4std29exceptionE]+0x10):
undefined reference to `std2::exception::~exception()'^M
cp_lto_pr65276_1.o:(.rodata._ZTVN4std29exceptionE[_ZTVN4std29exceptionE]+0x18):
undefined reference to `std2::exception::~exception()'^M
collect2: error: ld returned 1 exit status^M

link error with g++.dg/lto/pr65276 testcase.

2015-06-16  Uros Bizjak  <ubiz...@gmail.com>

    PR testsuite/65944
    * g++.dg/lto/pr65276_0.C: Add std2::exception::~exception() function.

Tested on x86_64-linux-gnu CentOS 5.11 (where linking failed) and
Fedora 22 (where linking didn't fail).

OK for mainline and gcc-5 branch?

Uros.

Index: g++.dg/lto/pr65276_0.C
===================================================================
--- g++.dg/lto/pr65276_0.C      (revision 224475)
+++ g++.dg/lto/pr65276_0.C      (working copy)
@@ -59,3 +59,5 @@
   };
   static ios_base::Init __ioinit;
 }
+
+std2::exception::~exception() noexcept { }