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-rw-r--r--src/os/windows/win32.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
index 3d5f0ebde..f69f01f6c 100644
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -453,6 +453,9 @@ int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
argc = ParseCommandLine(cmdline, argv, lengthof(argv));
+ /* Make sure our arguments contain only valid UTF-8 characters. */
+ for (int i = 0; i < argc; i++) ValidateString(argv[i]);
+
openttd_main(argc, argv);
free(cmdline);
return 0;