Test suites for Dialyzer

This is a transcription of most of the cvs.srv.it.uu.se:/hipe repository
dialyzer_tests into test suites that use the test server framework.

See README for information on how to use the included scripts for
modifications and updates.

When testing Dialyzer it's important that several OTP modules
are included in the plt. The suites takes care of that too.

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/dialyzer/test/small_tests_SUITE_data/src/inf_loop2.erl b/lib/dialyzer/test/small_tests_SUITE_data/src/inf_loop2.erl
new file mode 100644
index 0000000000..fbbec10a55
--- /dev/null
+++ b/lib/dialyzer/test/small_tests_SUITE_data/src/inf_loop2.erl
@@ -0,0 +1,23 @@
+%%---------------------------------------------------------------------
+%% Module that went into an infinite loop when trying to assign types.
+%%
+%% What was happening is that for functions which are in an SCC but all
+%% return none(), a second chance was given to them by the analysis to
+%% see whether they return none() because they are involved in an loop
+%% (presumably server-related) and could be assigned the type unit()
+%% instead. The problem is that when the really return none() for some
+%% other reason (an error such in this case) then we will again find
+%% none() and try again for unit(), thereby entering an infinite loop.
+%% The issue was resolved on May 17th by adding an appropriate boolean
+%% parameter to dialyzer_typesig:solve_scc() function.
+%%---------------------------------------------------------------------
+-module(inf_loop2).
+
+-export([test/0]).
+
+test() ->
+  lists:reverse(gazonk),
+  loop().
+
+loop() ->
+  test().