diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index 7ba920ed4..d37e3616c 100644
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,7 @@
+2018-02-11  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* runtime.def (BEGIN_CATCH): Set ECF_NOTHROW.
+
 2018-02-11  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* runtime.def (NEWCLASS): Set ECF_LEAF.
diff --git a/gcc/d/runtime.def b/gcc/d/runtime.def
index 5d6d6e5a7..ac5ef29a8 100644
--- a/gcc/d/runtime.def
+++ b/gcc/d/runtime.def
@@ -195,7 +195,8 @@ DEF_D_RUNTIME (AADELX, "_aaDelX", RT(BOOL),
 
 /* Used for throw() expressions.  */
 DEF_D_RUNTIME (THROW, "_d_throw", RT(VOID), P1(OBJECT), ECF_NORETURN)
-DEF_D_RUNTIME (BEGIN_CATCH, "__gdc_begin_catch", RT(VOIDPTR), P1(VOIDPTR), 0)
+DEF_D_RUNTIME (BEGIN_CATCH, "__gdc_begin_catch", RT(VOIDPTR), P1(VOIDPTR),
+	       ECF_NOTHROW)
 
 /* C++ exception handlers.  */
 DEF_D_RUNTIME (CXA_BEGIN_CATCH, "__cxa_begin_catch", RT(VOIDPTR), P1(VOIDPTR),