[Signal] Allow one-shot SIGPIPE handler to be reached

As SIGPIPE is no longer in the IntSigs array, handle SIGPIPE before
handling any interrupt signals.

Thanks to Alexandre Ganea for pointing out the issue here.

1 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/Support/Unix/Signals.inc b/llvm/lib/Support/Unix/Signals.inc
index 8c26fa9b8f2..2b31672670c 100644
--- a/llvm/lib/Support/Unix/Signals.inc
+++ b/llvm/lib/Support/Unix/Signals.inc
@@ -361,16 +361,16 @@ static RETSIGTYPE SignalHandler(int Sig) {
   {
     RemoveFilesToRemove();
 
+    if (Sig == SIGPIPE)
+      if (auto OldOneShotPipeFunction =
+              OneShotPipeSignalFunction.exchange(nullptr))
+        return OldOneShotPipeFunction();
+
     if (std::find(std::begin(IntSigs), std::end(IntSigs), Sig)
         != std::end(IntSigs)) {
       if (auto OldInterruptFunction = InterruptFunction.exchange(nullptr))
         return OldInterruptFunction();
 
-      if (Sig == SIGPIPE)
-        if (auto OldOneShotPipeFunction =
-                OneShotPipeSignalFunction.exchange(nullptr))
-          return OldOneShotPipeFunction();
-
       raise(Sig);   // Execute the default handler.
       return;
    }