Index: clang/lib/Format/FormatTokenLexer.cpp
===================================================================
--- clang/lib/Format/FormatTokenLexer.cpp
+++ clang/lib/Format/FormatTokenLexer.cpp
@@ -401,7 +401,7 @@
   if (!Try->is(tok::kw_try))
     return false;
   auto &Next = *(Tokens.end() - 1);
-  if (Next->isOneOf(tok::l_brace, tok::colon))
+  if (Next->isOneOf(tok::l_brace, tok::colon, tok::hash))
     return false;
 
   if (Tokens.size() > 2) {
Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -2743,6 +2743,19 @@
   verifyFormat("int catch, size;");
   verifyFormat("catch = foo();");
   verifyFormat("if (catch < size) {\n  return true;\n}");
+
+  FormatStyle Style = getLLVMStyle();
+  Style.BreakBeforeBraces = FormatStyle::BS_Custom;
+  Style.BraceWrapping.AfterFunction = true;
+  verifyFormat("#if NO_EX\n"
+               "try\n"
+               "#endif\n"
+               "{\n"
+               "}\n"
+               "#if NO_EX\n"
+               "catch (...) {\n"
+               "}",
+               Style);
 }
 
 TEST_F(FormatTest, FormatSEHTryCatch) {