From 1ec534e9464accf9c8544001368cb485bbc2aa52 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Thu, 4 Jun 2020 04:04:25 +0200
Subject: testsuite/gna: add a test for stack2 release.

---
 testsuite/gna/bug0115/repro1.vhdl  | 50 ++++++++++++++++++++++++++++++++++++++
 testsuite/gna/bug0115/testsuite.sh | 10 ++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 testsuite/gna/bug0115/repro1.vhdl
 create mode 100755 testsuite/gna/bug0115/testsuite.sh

diff --git a/testsuite/gna/bug0115/repro1.vhdl b/testsuite/gna/bug0115/repro1.vhdl
new file mode 100644
index 000000000..cbf1bd9c2
--- /dev/null
+++ b/testsuite/gna/bug0115/repro1.vhdl
@@ -0,0 +1,50 @@
+--  Test release of stack2 for conditions.
+entity repro1 is
+end;
+
+library ieee;
+use ieee.numeric_std.all;
+
+architecture behav of repro1 is
+  function ispow2a(i : integer) return boolean is
+  begin
+    if to_integer(to_unsigned(i, 32) and to_unsigned(i - 1, 32)) = 0 then
+      return true;
+    else
+      return false;
+    end if;
+  end;
+
+  function ispow2b(i : integer) return boolean is
+  begin
+    return to_integer(to_unsigned(i, 32) and to_unsigned(i - 1, 32)) = 0;
+  end;
+
+  function ispow2c(i : integer) return boolean is
+  begin
+    while to_integer(to_unsigned(i, 32) and to_unsigned(i - 1, 32)) = 0 loop
+      return true;
+    end loop;
+    return false;
+  end;
+
+  function ispow2d(i : integer) return boolean is
+  begin
+    loop
+      exit when to_integer(to_unsigned(i, 32) and to_unsigned(i - 1, 32)) = 0;
+      return False;
+    end loop;
+    return True;
+  end;
+
+  signal s : boolean;
+begin
+  assert ispow2a (64);
+  assert not ispow2b (31);
+
+  assert ispow2c (64);
+  assert not ispow2c (31);
+
+  assert ispow2d (128);
+  assert not ispow2d (30);
+end behav;
diff --git a/testsuite/gna/bug0115/testsuite.sh b/testsuite/gna/bug0115/testsuite.sh
new file mode 100755
index 000000000..7f0bbe5fe
--- /dev/null
+++ b/testsuite/gna/bug0115/testsuite.sh
@@ -0,0 +1,10 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+analyze repro1.vhdl
+elab_simulate repro1 --checks
+
+clean
+
+echo "Test successful"
-- 
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