1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Support/Windows/Signals.inc b/llvm/lib/Support/Windows/Signals.inc
index 497fa4359fc..4f0848ae512 100644
--- a/llvm/lib/Support/Windows/Signals.inc
+++ b/llvm/lib/Support/Windows/Signals.inc
@@ -385,6 +385,10 @@ void sys::PrintStackTraceOnErrorSignal() {
   RegisterHandler();
   LeaveCriticalSection(&CriticalSection);
 }
+}
+
+// Provide a prototype for RtlCaptureContext, mingw32 is missing it.
+extern "C" VOID WINAPI RtlCaptureContext(PCONTEXT ContextRecord);
 
 void llvm::sys::PrintStackTrace(raw_ostream &OS) {
 
@@ -425,7 +429,6 @@ void sys::AddSignalHandler(void (*FnPtr)(void *), void *Cookie) {
   RegisterHandler();
   LeaveCriticalSection(&CriticalSection);
 }
-}
 
 static void Cleanup() {
   EnterCriticalSection(&CriticalSection);