Removed exception specification from custom operator new overrides.

This should hopefully fix segfaults on OpenBSD in CI, when these
operators throw bad_alloc. Presumably, clang on OpenBSD crashes
the process if an exception is thrown from a function with an exception
specification, even if the exception matches the specification.

The specifications are not necessary since C++11 anyway, and we
no longer support C++03.

Author: Lastique

test/threads/thread/constr/FArgs_pass.cpp

@@ -29,12 +29,8 @@ unsigned throw_one = 0xFFFF;
 
 #if defined _GLIBCXX_THROW
 void* operator new(std::size_t s) _GLIBCXX_THROW (std::bad_alloc)
-#elif defined BOOST_MSVC
-void* operator new(std::size_t s)
-#elif __cplusplus > 201402L
-void* operator new(std::size_t s)
 #else
-void* operator new(std::size_t s) throw (std::bad_alloc)
+void* operator new(std::size_t s)
 #endif
 {
   //std::cout << __FILE__ << ":" << __LINE__ << std::endl;

test/threads/thread/constr/F_pass.cpp

@@ -29,12 +29,8 @@ unsigned throw_one = 0xFFFF;
 
 #if defined _GLIBCXX_THROW
 void* operator new(std::size_t s) _GLIBCXX_THROW (std::bad_alloc)
-#elif defined BOOST_MSVC
-void* operator new(std::size_t s)
-#elif __cplusplus > 201402L
-void* operator new(std::size_t s)
 #else
-void* operator new(std::size_t s) throw (std::bad_alloc)
+void* operator new(std::size_t s)
 #endif
 {
   //std::cout << __FILE__ << ":" << __LINE__ << std::endl;

test/threads/thread/constr/lambda_pass.cpp

@@ -31,12 +31,8 @@ unsigned throw_one = 0xFFFF;
 
 #if defined _GLIBCXX_THROW
 void* operator new(std::size_t s) _GLIBCXX_THROW (std::bad_alloc)
-#elif defined BOOST_MSVC
-void* operator new(std::size_t s)
-#elif __cplusplus > 201402L
-void* operator new(std::size_t s)
 #else
-void* operator new(std::size_t s) throw (std::bad_alloc)
+void* operator new(std::size_t s)
 #endif
 {
   if (throw_one == 0) throw std::bad_alloc();