diff --git a/flang/lib/Frontend/FrontendActions.cpp b/flang/lib/Frontend/FrontendActions.cpp
--- a/flang/lib/Frontend/FrontendActions.cpp
+++ b/flang/lib/Frontend/FrontendActions.cpp
@@ -94,6 +94,9 @@
     return;
   }
 
+  // Report the diagnostics from parsing
+  ci.parsing().messages().Emit(llvm::errs(), ci.allCookedSources());
+
   auto &parseTree{*ci.parsing().parseTree()};
 
   // Prepare semantics
diff --git a/flang/test/Frontend/preprocessor-diag.f90 b/flang/test/Frontend/prescanner-diag.f90
rename from flang/test/Frontend/preprocessor-diag.f90
rename to flang/test/Frontend/prescanner-diag.f90
--- a/flang/test/Frontend/preprocessor-diag.f90
+++ b/flang/test/Frontend/prescanner-diag.f90
@@ -1,11 +1,13 @@
 ! RUN: %f18 -E -I %S/Inputs/ %s 2>&1 | FileCheck %s
 ! RUN: %flang-new -E -I %S/Inputs/ %s 2>&1 | FileCheck %s
+! RUN: %flang-new -fsyntax-only -I %S/Inputs/ %s 2>&1 | FileCheck %s
 ! RUN: %flang-new -fc1 -E -I %S/Inputs/ %s 2>&1 | FileCheck %s
+! RUN: %flang-new -fc1 -fsyntax-only -I %S/Inputs/ %s 2>&1 | FileCheck %s
 
 ! Test that the driver correctly reports diagnostics from the prescanner. The contents of the include file are irrelevant here.
 
-! CHECK: preprocessor-diag.f90:8:20: #include: extra stuff ignored after file name
+! CHECK: prescanner-diag.f90:10:20: #include: extra stuff ignored after file name
 #include <empty.h> comment
-! CHECK: preprocessor-diag.f90:10:20: #include: extra stuff ignored after file name
+! CHECK: prescanner-diag.f90:12:20: #include: extra stuff ignored after file name
 #include "empty.h" comment
 end