[OPENMP] Enable c++ exceptions outside of the target constructs iff they are

enabled for the host.

If the compilation for the host enables C++ exceptions, but they are not
supported by the device, we still need to allow the code with the
exception handling constructs outside of the target regions.

llvm-svn: 331372

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index a24ae7a077e..95ea8418e1a 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -695,7 +695,11 @@ ExprResult Sema::BuildCXXThrow(SourceLocation OpLoc, Expr *Ex,
                                bool IsThrownVarInScope) {
   // Don't report an error if 'throw' is used in system headers.
   if (!getLangOpts().CXXExceptions &&
-      !getSourceManager().isInSystemHeader(OpLoc))
+      !getSourceManager().isInSystemHeader(OpLoc) &&
+      (!getLangOpts().OpenMPIsDevice ||
+       !getLangOpts().OpenMPHostCXXExceptions ||
+       isInOpenMPTargetExecutionDirective() ||
+       isInOpenMPDeclareTargetContext()))
     Diag(OpLoc, diag::err_exceptions_disabled) << "throw";
 
   // Exceptions aren't allowed in CUDA device code.