1 files changed, 5 insertions, 3 deletions
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 25246a3e89a9..55d490992108 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -548,7 +548,7 @@ void writeToStderr(const string & s)
 }
 
 
-void (*_writeToStderr) (const unsigned char * buf, size_t count) = 0;
+std::function<void(const unsigned char * buf, size_t count)> _writeToStderr;
 
 
 void readFull(int fd, unsigned char * buf, size_t count)
@@ -1062,13 +1062,15 @@ void restoreSIGPIPE()
 
 volatile sig_atomic_t _isInterrupted = 0;
 
+thread_local bool interruptThrown = false;
+
 void _interrupted()
 {
     /* Block user interrupts while an exception is being handled.
        Throwing an exception while another exception is being handled
        kills the program! */
-    if (!std::uncaught_exception()) {
-        _isInterrupted = 0;
+    if (!interruptThrown && !std::uncaught_exception()) {
+        interruptThrown = true;
         throw Interrupted("interrupted by the user");
     }
 }