[libc++abi] Fix ASAN build with older compiler-rt versions.
Summary:
compiler-rt recently added the `__asan_handle_no_return()` function that libc++abi needs to use, however older versions of compiler-rt don't provide this interface and that breaks the libc++abi build.
This patch attempts to fix the issues by using a macro to detect if `asan_interface.h` is new enough to provide the function.
See D37871
Reviewers: phosek, vitalybuka
Reviewed By: phosek, vitalybuka
Subscribers: dberris, cfe-commits
Differential Revision: https://reviews.llvm.org/D37872
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@313304 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/cxa_exception.cpp b/src/cxa_exception.cpp
index 204ea2d..4662ccd 100644
--- a/src/cxa_exception.cpp
+++ b/src/cxa_exception.cpp
@@ -222,7 +222,8 @@
exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
-#if __has_feature(address_sanitizer)
+#if __has_feature(address_sanitizer) && \
+ defined(SANITIZER_ASAN_INTERFACE_HAS_HANDLE_NO_RETURN)
// Inform the ASan runtime that now might be a good time to clean stuff up.
__asan_handle_no_return();
#endif
