Clang: Fix future reporting on backend crash

...otherwise CppUseSelectionsUpdater might block for an infinite
duration.

Change-Id: I756d82499b0b2864363dcaeff15398a8bf5500d9
Reviewed-by: Ivan Donchevskii <[email protected]>
Reviewed-by: David Schulz <[email protected]>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/plugins/clangcodemodel/clangbackendreceiver.cpp b/src/plugins/clangcodemodel/clangbackendreceiver.cpp
index 9d620d6697d..c9bea084258 100644
--- a/src/plugins/clangcodemodel/clangbackendreceiver.cpp
+++ b/src/plugins/clangcodemodel/clangbackendreceiver.cpp
@@ -140,11 +140,15 @@ void BackendReceiver::reset()
     m_assistProcessorsTable.clear();
 
     // Clean up futures for references
-    for (ReferencesEntry &entry : m_referencesTable)
+    for (ReferencesEntry &entry : m_referencesTable) {
         entry.futureInterface.cancel();
+        entry.futureInterface.reportFinished();
+    }
     m_referencesTable.clear();
-    for (QFutureInterface<CppTools::SymbolInfo> &futureInterface : m_followTable)
+    for (QFutureInterface<CppTools::SymbolInfo> &futureInterface : m_followTable) {
         futureInterface.cancel();
+        futureInterface.reportFinished();
+    }
     m_followTable.clear();
 }