Fix bug: 2002-09-20-VarArgPrototypes.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3870 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 7501a9bfde..e993b740f4 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -683,8 +683,10 @@ void CWriter::printFunctionSignature(const Function *F, bool Prototype) {
     }
   }
 
-  // Finish printing arguments...
-  if (FT->isVarArg()) {
+  // Finish printing arguments... if this is a vararg function, print the ...,
+  // unless there are no known types, in which case, we just emit ().
+  //
+  if (FT->isVarArg() && !FT->getParamTypes().empty()) {
     if (FT->getParamTypes().size()) Out << ", ";
     Out << "...";  // Output varargs portion of signature!
   }