FileCheck: dump command line context with empty input

Differential Revision: http://reviews.llvm.org/D20716



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271047 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/utils/FileCheck/FileCheck.cpp b/utils/FileCheck/FileCheck.cpp
index 69f93020317..08055cae96a 100644
--- a/utils/FileCheck/FileCheck.cpp
+++ b/utils/FileCheck/FileCheck.cpp
@@ -1298,6 +1298,13 @@ static void AddCheckPrefixIfNeeded() {
     CheckPrefixes.push_back("CHECK");
 }
 
+static void DumpCommandLine(int argc, char **argv) {
+  errs() << "FileCheck command line: ";
+  for (int I = 0; I < argc; I++)
+    errs() << " " << argv[I];
+  errs() << "\n";
+}
+
 int main(int argc, char **argv) {
   sys::PrintStackTraceOnErrorSignal();
   PrettyStackTraceProgram X(argc, argv);
@@ -1331,6 +1338,7 @@ int main(int argc, char **argv) {
 
   if (File->getBufferSize() == 0 && !AllowEmptyInput) {
     errs() << "FileCheck error: '" << InputFilename << "' is empty.\n";
+    DumpCommandLine(argc, argv);
     return 2;
   }