Fix a bug preventing the cause of a module-out-of-date error from being printed

llvm-svn: 280009

clang/lib/Serialization/ASTReader.cpp

@@ -3769,7 +3769,7 @@ ASTReader::ReadASTCore(StringRef FileName,
 
     // Otherwise, return an error.
     Diag(diag::err_module_file_out_of_date) << moduleKindForDiagnostic(Type)
-                                            << FileName << ErrorStr.empty()
+                                            << FileName << !ErrorStr.empty()
                                             << ErrorStr;
     return Failure;
   }

clang/test/Modules/explicit-build.cpp

@@ -199,6 +199,6 @@
 // RUN:            -fmodule-file=%t/c.pcm \
 // RUN:            %s -DHAVE_A -DHAVE_B -DHAVE_C 2>&1 | FileCheck --check-prefix=CHECK-MISMATCHED-B %s
 //
-// CHECK-MISMATCHED-B:      fatal error: module file '{{.*}}b.pcm' is out of date and needs to be rebuilt
+// CHECK-MISMATCHED-B:      fatal error: module file '{{.*}}b.pcm' is out of date and needs to be rebuilt: module file out of date
 // CHECK-MISMATCHED-B-NEXT: note: imported by module 'c'
 // CHECK-MISMATCHED-B-NOT:  note: