diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index ee0e26e0da4e..39a143feecad 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -1742,8 +1742,8 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
 
   case ABIArgInfo::Extend:
   case ABIArgInfo::Direct: {
-    if (RetAI.getCoerceToType() == ConvertType(RetTy) &&
-        RetAI.getDirectOffset() == 0) {
+    llvm::Type *RetIRTy = ConvertType(RetTy);
+    if (RetAI.getCoerceToType() == RetIRTy && RetAI.getDirectOffset() == 0) {
       if (RetTy->isAnyComplexType()) {
         llvm::Value *Real = Builder.CreateExtractValue(CI, 0);
         llvm::Value *Imag = Builder.CreateExtractValue(CI, 1);
@@ -1760,7 +1760,13 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
         BuildAggStore(*this, CI, DestPtr, DestIsVolatile, false);
         return RValue::getAggregate(DestPtr);
       }
-      return RValue::get(CI);
+      
+      // If the argument doesn't match, perform a bitcast to coerce it.  This
+      // can happen due to trivial type mismatches.
+      llvm::Value *V = CI;
+      if (V->getType() != RetIRTy)
+        V = Builder.CreateBitCast(V, RetIRTy);
+      return RValue::get(V);
     }
 
     llvm::Value *DestPtr = ReturnValue.getValue();
diff --git a/clang/test/CodeGen/call.c b/clang/test/CodeGen/call.c
index cd8bd519935a..ef327751b3ad 100644
--- a/clang/test/CodeGen/call.c
+++ b/clang/test/CodeGen/call.c
@@ -21,3 +21,19 @@ void Interpret() {
   // CHECK: call void ({{.*}}, ...)* @JS_ReportErrorNumber({{.*}}@js_GetErrorMessage
 }
 
+
+
+
+// PR10337
+struct sigaction { int (*_sa_handler)(int); };
+typedef int SigHandler ();
+typedef struct sigaction sighandler_cxt;
+SigHandler *rl_set_sighandler(ohandler)
+sighandler_cxt *ohandler;  {
+  return 0;
+}
+
+void rl_set_signals() {
+  SigHandler *oh;
+  oh = rl_set_sighandler(0);
+}