workaround for breakpad signal handler on linux

The breakpad signal handler is overwritten by our own signal handler
during startup. As a workaround we use the same approach as in the
windows code and add call the old signal handler if a crash was
registered.

Change-Id: I1179fd9cba851734aa1686168f231cf68de57c1a
Reviewed-on: https://gerrit.libreoffice.org/35226
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/sal/osl/unx/signal.cxx b/sal/osl/unx/signal.cxx
index 2cf6d7edda43..55c7765b5d8a 100644
--- a/sal/osl/unx/signal.cxx
+++ b/sal/osl/unx/signal.cxx
@@ -445,6 +445,30 @@ void signalHandlerFunction(int signal, siginfo_t * info, void * context)
             break;
     }
 
+#if HAVE_FEATURE_BREAKPAD
+    if (Info.Signal == osl_Signal_AccessViolation ||
+            Info.Signal == osl_Signal_IntegerDivideByZero ||
+            Info.Signal == osl_Signal_FloatDivideByZero)
+    {
+        for (SignalAction & rSignal : Signals)
+        {
+            if (rSignal.Signal == signal)
+            {
+                if (rSignal.siginfo)
+                {
+                    (*reinterpret_cast<Handler2>(rSignal.Handler))(
+                        signal, info, context);
+                }
+                else
+                {
+                    rSignal.Handler(signal);
+                }
+                break;
+            }
+        }
+    }
+#endif
+
     switch (callSignalHandler(&Info))
     {
     case osl_Signal_ActCallNextHdl: