exceptor: Add SA_ONSTACK only if available

Notably, QNX 6.x doesn't have this flag defined.
frida · May 24, 2024 · 04f3fbd · 04f3fbd
1 parent bf62a36
commit 04f3fbd
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/gum/backend-posix/gumexceptor-posix.c b/gum/backend-posix/gumexceptor-posix.c
@@ -252,7 +252,10 @@ gum_exceptor_backend_attach (GumExceptorBackend * self)
 
   action.sa_sigaction = gum_exceptor_backend_on_signal;
   sigemptyset (&action.sa_mask);
-  action.sa_flags = SA_SIGINFO | SA_NODEFER | SA_ONSTACK;
+  action.sa_flags = SA_SIGINFO | SA_NODEFER;
+#ifdef SA_ONSTACK
+  action.sa_flags |= SA_ONSTACK;
+#endif
   for (i = 0; i != G_N_ELEMENTS (handled_signals); i++)
   {
     gint sig = handled_signals[i];