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diff --git a/testsuite/gna/ticket11/signalevents.vhdl b/testsuite/gna/ticket11/signalevents.vhdl
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+entity tb is
+end entity;
+
+architecture arch of tb is
+ signal s: integer := 0;
+begin
+ process is
+ begin
+ wait for 1 us;
+ s <= 1;
+ s <= 2 after 1 us;
+ assert s = 0;
+ wait on s;
+ report "s = " & integer'image(s);
+ assert s = 2 severity failure;
+ assert now = 2 us severity failure;
+ wait;
+ end process;
+
+end architecture;