1 files changed, 74 insertions, 0 deletions
diff --git a/tests/auto/quick/qmltests/tst_qmltests.cpp b/tests/auto/quick/qmltests/tst_qmltests.cpp
index baffdbb57..5dc909709 100644
--- a/tests/auto/quick/qmltests/tst_qmltests.cpp
+++ b/tests/auto/quick/qmltests/tst_qmltests.cpp
@@ -31,8 +31,82 @@
 #include <QtWebEngine/QQuickWebEngineProfile>
 #include "qt_webengine_quicktest.h"
 
+#if defined(Q_OS_LINUX) && defined(QT_DEBUG)
+#include <fcntl.h>
+#include <signal.h>
+#include <unistd.h>
+#endif
+
+#if defined(Q_OS_LINUX) && defined(QT_DEBUG)
+static bool debuggerPresent()
+{
+    int fd = open("/proc/self/status", O_RDONLY);
+    if (fd == -1)
+      return false;
+    char buffer[2048];
+    ssize_t size = read(fd, buffer, sizeof(buffer) - 1);
+    if (size == -1) {
+      close(fd);
+      return false;
+    }
+    buffer[size] = 0;
+    const char tracerPidToken[] = "\nTracerPid:";
+    char *tracerPid = strstr(buffer, tracerPidToken);
+    if (!tracerPid) {
+      close(fd);
+      return false;
+    }
+    tracerPid += sizeof(tracerPidToken);
+    long int pid = strtol(tracerPid, &tracerPid, 10);
+    close(fd);
+    return pid != 0;
+}
+
+static void stackTrace()
+{
+    bool ok = false;
+    const int disableStackDump = qEnvironmentVariableIntValue("QTEST_DISABLE_STACK_DUMP", &ok);
+    if (ok && disableStackDump == 1)
+        return;
+
+    if (debuggerPresent())
+        return;
+
+    fprintf(stderr, "\n========= Received signal, dumping stack ==============\n");
+    char cmd[512];
+    qsnprintf(cmd, 512, "gdb --pid %d 2>/dev/null <<EOF\n"
+                        "set prompt\n"
+                        "set height 0\n"
+                        "thread apply all where full\n"
+                        "detach\n"
+                        "quit\n"
+                        "EOF\n",
+                        (int)getpid());
+
+    if (system(cmd) == -1)
+        fprintf(stderr, "calling gdb failed\n");
+    fprintf(stderr, "========= End of stack trace ==============\n");
+}
+
+static void sigSegvHandler(int signum)
+{
+    stackTrace();
+    qFatal("Received signal %d", signum);
+}
+#endif
+
 int main(int argc, char **argv)
 {
+#if defined(Q_OS_LINUX) && defined(QT_DEBUG)
+    struct sigaction sigAction;
+
+    sigemptyset(&sigAction.sa_mask);
+    sigAction.sa_handler = &sigSegvHandler;
+    sigAction.sa_flags = 0;
+
+    sigaction(SIGSEGV, &sigAction, 0);
+#endif
+
     // Inject the mock ui delegates module
     qputenv("QML2_IMPORT_PATH", QByteArray(TESTS_SOURCE_DIR "qmltests/mock-delegates"));
     QScopedPointer<Application> app;