[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, 19 insertions, 2 deletions

diff --git a/test/test_vector1.pass.cpp b/test/test_vector1.pass.cpp
index 6790cb5..978ed3c 100644
--- a/test/test_vector1.pass.cpp
+++ b/test/test_vector1.pass.cpp
@@ -47,8 +47,19 @@ int gConstructorCounter;
 int gConstructorThrowTarget;
 int gDestructorCounter;
 int gDestructorThrowTarget;
-void throw_construct ( void *p ) { if ( gConstructorCounter   == gConstructorThrowTarget ) throw 1; ++gConstructorCounter; }
-void throw_destruct  ( void *p ) { if ( ++gDestructorCounter  == gDestructorThrowTarget  ) throw 2; }
+void throw_construct ( void *p ) {
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
+    if ( gConstructorCounter   == gConstructorThrowTarget )
+        throw 1;
+    ++gConstructorCounter;
+#endif
+}
+void throw_destruct  ( void *p ) {
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
+    if ( ++gDestructorCounter  == gDestructorThrowTarget  )
+        throw 2;
+#endif
+}
 
 #if __cplusplus >= 201103L
 #   define CAN_THROW noexcept(false)
@@ -146,6 +157,7 @@ int test_counted ( ) {
     return retVal;
     }
     
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
 //  Make sure the constructors and destructors are matched
 int test_exception_in_constructor ( ) {
     int retVal = 0;
@@ -202,7 +214,9 @@ int test_exception_in_constructor ( ) {
 
     return retVal;
     }
+#endif
 
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
 //  Make sure the constructors and destructors are matched
 int test_exception_in_destructor ( ) {
     int retVal = 0;
@@ -253,12 +267,15 @@ int test_exception_in_destructor ( ) {
 
     return retVal;
     }
+#endif
 
 int main ( int argc, char *argv [] ) {
     int retVal = 0;
     retVal += test_empty ();
     retVal += test_counted ();
+#ifndef LIBCXXABI_HAS_NO_EXCEPTIONS
     retVal += test_exception_in_constructor ();
     retVal += test_exception_in_destructor ();
+#endif
     return retVal;
     }