Allow using libsupc++ with LIBCXX_ENABLE_STATIC_ABI_LIBRARY

[mdaniels]

Summary

The code cannot currently link when using libsupc++ with the LIBCXX_ENABLE_STATIC_ABI_LIBRARY option.

This change ifdef's out the the destructor and 'what' function for bad_array_length and bad_array_new_length when GLIBCXX is defined. The constructors that are left in are the only functions not being provided by libsupc++ itself, and follows the same pattern that was used to ifdef bad_alloc.

Testing was done on a Linux x86_64 host using GCC 5.4 and libc++ from ToT. I see no change to the test results when using libsup++ or libstdc++ without LIBCXX_ENABLE_STATIC_ABI_LIBRARY. When using libsupc++ with LIBCXX_ENABLE_STATIC_ABI_LIBRARY it will now build and test results are the same as those without the option specified.

[EricWF]

LGTM. It seems like it was added to libstdc++ in 4.9, which works for me since building with GCC 4.8 isn't really supported.

[mdaniels]

I don't have commit access, could I trouble someone to do it on my behalf?

[EricWF]

Committed as r287388.

src/new.cpp

 }
 
 #endif // !__GLIBCXX__
 
 bad_array_new_length::bad_array_new_length() _NOEXCEPT
 {
 }
 
+#ifndef __GLIBCXX__
+
 bad_array_new_length::~bad_array_new_length() _NOEXCEPT
 {
 }
 
 const char*
 bad_array_new_length::what() const _NOEXCEPT
 {
     return "bad_array_new_length";
 }
 
+#endif // !__GLIBCXX__
+
 #endif //LIBCXXRT
 
-const char*
-bad_array_length::what() const _NOEXCEPT
+bad_array_length::bad_array_length() _NOEXCEPT
 {
-    return "bad_array_length";
 }
 
-bad_array_length::bad_array_length() _NOEXCEPT
+#ifndef __GLIBCXX__
+
+bad_array_length::~bad_array_length() _NOEXCEPT
 {
 }
 
-bad_array_length::~bad_array_length() _NOEXCEPT
+const char*
+bad_array_length::what() const _NOEXCEPT
 {
+    return "bad_array_length";
 }
 
+#endif // !__GLIBCXX__
+
 #endif // _LIBCPPABI_VERSION
 
 #ifndef LIBSTDCXX
 
 void
 __throw_bad_alloc()
 {
 #ifndef _LIBCPP_NO_EXCEPTIONS