+ changed web bug #2382 into test for root cause

tests/webtbs/tw2382.pp

@@ -0,0 +1,45 @@
+var
+  sa : array[0..2] of char;
+  s: string;
+begin
+  sa := '';
+  s := sa;
+  if length(s) <> 0 then
+    begin
+      writeln('error 0');
+      halt(1);
+    end;
+
+  sa := 'a';
+  s := sa;
+  if length(s) <> 1 then
+    begin
+      writeln('error 1');
+      halt(1);
+    end;
+
+  sa := 'ab';
+  s := sa;
+  if length(s) <> 2 then
+    begin
+      writeln('error 2');
+      halt(1);
+    end;
+
+  sa := 'abc';
+  // check for possible overflow in assignment
+  s[4] := '1';
+  s := sa;
+  if length(s) <> 3 then
+    begin
+      writeln('error 3');
+      halt(1);
+    end;
+
+  if s[4] <> '1' then
+    begin
+      writeln('error 4');
+      halt(1);
+    end;
+end.
+