Print a warning message if `OS.exit_code` is set to a non-portable value

This also improves the related documentation.

1 files changed, 4 insertions, 0 deletions

diff --git a/core/bind/core_bind.cpp b/core/bind/core_bind.cpp
index 4c8dcc20ea..25a67af342 100644
--- a/core/bind/core_bind.cpp
+++ b/core/bind/core_bind.cpp
@@ -686,6 +686,10 @@ int _OS::get_exit_code() const {
 
 void _OS::set_exit_code(int p_code) {
 
+	if (p_code < 0 || p_code > 125) {
+		WARN_PRINT("For portability reasons, the exit code should be set between 0 and 125 (inclusive).");
+	}
+
 	OS::get_singleton()->set_exit_code(p_code);
 }