diff --git a/tests/syntax/oracle/wide_string.res.oracle b/tests/syntax/oracle/wide_string.res.oracle
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/syntax/wide_string.c b/tests/syntax/wide_string.c
new file mode 100644
index 0000000000000000000000000000000000000000..3fbd0c300452190ea23e92f22f5be85549314939
--- /dev/null
+++ b/tests/syntax/wide_string.c
@@ -0,0 +1,5 @@
+#include <wchar.h>
+
+_Static_assert(sizeof(L"AA") == 3*sizeof(wchar_t), "Incorrect sizeof behaviour");
+
+int main(void){}