testsuite/synth: add a test for #1903

2 files changed, 30 insertions, 0 deletions

diff --git a/testsuite/synth/issue1903/tb.vhdl b/testsuite/synth/issue1903/tb.vhdl
new file mode 100644
index 000000000..aab6a85fe
--- /dev/null
+++ b/testsuite/synth/issue1903/tb.vhdl
@@ -0,0 +1,23 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity tb is port (
+   clk  :  in std_logic;
+   rst  :  in std_logic;
+   a    :  in std_logic;
+   y    : out std_logic);
+end entity;
+
+architecture beh of tb is
+signal yo : std_logic;
+
+procedure ff(signal c: in std_logic; r: in std_logic; i: in std_logic; signal o: out std_logic) is
+begin
+   wait until c'event and c ='1';
+   if r = '1' then o <= '0'; else o <= i; end if;
+end ff;
+
+begin
+   ff(clk, rst, a, yo);
+   y <= yo;
+end beh;
diff --git a/testsuite/synth/issue1903/testsuite.sh b/testsuite/synth/issue1903/testsuite.sh
new file mode 100755
index 000000000..38a92fd7f
--- /dev/null
+++ b/testsuite/synth/issue1903/testsuite.sh
@@ -0,0 +1,7 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth_failure tb.vhdl -e
+
+echo "Test successful"