[libcxxabi] Introduce a -fno-exceptions libc++abi libary variant

Currently there is only support for a -fno-exceptions libc++ build. This is
problematic for functions such as std::terminate() which are defined in
libc++abi and using any of those functions throws away most of the benefits
of using -fno-exceptions (code-size). This patch introduces a -fno-exceptions
libc++abi build to address this issue.

This new variant of libc++abi cannot be linked against any with-exceptions
code as some symbols necessary for handling exceptions are missing in this
library.

Differential revision: http://reviews.llvm.org/D20677

Reviewers: EricWF, mclow.lists, bcraig

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@271267 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/test/test_guard.pass.cpp b/test/test_guard.pass.cpp
index 41ff794..9b0c2d5 100644
--- a/test/test_guard.pass.cpp
+++ b/test/test_guard.pass.cpp
@@ -41,6 +41,7 @@ namespace test1 {
 // When initialization fails, ensure that we try to initialize it again next
 // time.
 namespace test2 {
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
     static int run_count = 0;
     int increment() {
         ++run_count;
@@ -58,6 +59,9 @@ namespace test2 {
         helper();
         assert(run_count == 2);
     }
+#else
+   void test() {}
+#endif
 }
 
 // Check that we can initialize a second value while initializing a first.