diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index f2a962408ea..7b76f1f9707 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -99,6 +99,7 @@
 #include <errno.h>
 #include <signal.h>
 #include <time.h>
+#include <sys/resource.h>
 #endif
 
 #if defined(Q_OS_MACX)
@@ -143,6 +144,22 @@ static bool debuggerPresent()
 #endif
 }
 
+static void disableCoreDump()
+{
+    bool ok = false;
+    const int disableCoreDump = qEnvironmentVariableIntValue("QTEST_DISABLE_CORE_DUMP", &ok);
+    if (ok && disableCoreDump == 1) {
+#if defined(Q_OS_UNIX)
+        struct rlimit limit;
+        limit.rlim_cur = 0;
+        limit.rlim_max = 0;
+        if (setrlimit(RLIMIT_CORE, &limit) != 0)
+            qWarning("Failed to disable core dumps: %d", errno);
+#endif
+    }
+}
+Q_CONSTRUCTOR_FUNCTION(disableCoreDump);
+
 static void stackTrace()
 {
     bool ok = false;
diff --git a/tests/auto/testlib/selftests/tst_selftests.cpp b/tests/auto/testlib/selftests/tst_selftests.cpp
index 08060770315..35b759bcc28 100644
--- a/tests/auto/testlib/selftests/tst_selftests.cpp
+++ b/tests/auto/testlib/selftests/tst_selftests.cpp
@@ -592,8 +592,10 @@ void tst_Selftests::doRunSubTest(QString const& subdir, QStringList const& logge
 
     QProcess proc;
     QProcessEnvironment environment = processEnvironment();
-    if (crashes)
+    if (crashes) {
+        environment.insert("QTEST_DISABLE_CORE_DUMP", "1");
         environment.insert("QTEST_DISABLE_STACK_DUMP", "1");
+    }
     proc.setProcessEnvironment(environment);
     const QString path = subdir + QLatin1Char('/') + subdir;
     proc.start(path, arguments);