[scudo] Implement stricter separation of C vs C++

Summary:
Initially, Scudo had a monolithic design where both C and C++ functions were
living in the same library. This was not necessarily ideal, and with the work
on -fsanitize=scudo, it became more apparent that this needed to change.

We are splitting the new/delete interceptor in their own C++ library. This
allows more flexibility, notably with regard to std::bad_alloc when the work is
done. This also allows us to not link new & delete when using pure C.

Additionally, we add the UBSan runtimes with Scudo, in order to be able to have
a -fsanitize=scudo,undefined in Clang (see work in D39334).

The changes in this patch:
- split the cxx specific code in the scudo cmake file into a new library;
  (remove the spurious foreach loop, that was not necessary)
- add the UBSan runtimes (both C and C++);
- change the test cmake file to allow for specific C & C++ tests;
- make C tests pure C, rename their extension accordingly.

Reviewers: alekseyshl

Reviewed By: alekseyshl

Subscribers: srhines, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D39461

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@317097 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 1 deletions

diff --git a/test/scudo/sized-delete.cpp b/test/scudo/sized-delete.cpp
index 9c3a2c596..85df05e2f 100644
--- a/test/scudo/sized-delete.cpp
+++ b/test/scudo/sized-delete.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_scudo -fsized-deallocation %s -o %t
+// RUN: %clangxx_scudo -fsized-deallocation %s -o %t
 // RUN: %env_scudo_opts=DeleteSizeMismatch=1     %run %t gooddel    2>&1
 // RUN: %env_scudo_opts=DeleteSizeMismatch=1 not %run %t baddel     2>&1 | FileCheck %s
 // RUN: %env_scudo_opts=DeleteSizeMismatch=0     %run %t baddel     2>&1