dev-ml/ppxlib/files/ppxlib-0.23.0-fix-ocaml-4.13.patch


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https://github.com/ocaml-ppx/ppxlib/commit/ce371cfb4c2ad712cd8e9b803bbf4ef650aa5e72

From: Sonja Heinze <sonjaleaheinze@gmail.com>
Date: Fri, 10 Sep 2021 16:08:22 +0200
Subject: [PATCH] Make our expect-test version compatible with 4.13 compiler

The Warnings.parse_options function was returning a unit on older compilers
and is returning an alert option now, but under the hood it still has the
same side-effects.

Signed-off-by: Sonja Heinze <sonjaleaheinze@gmail.com>
--- a/test/expect/expect_test.ml
+++ b/test/expect/expect_test.ml
@@ -63,7 +63,7 @@ let main () =
     setup_printers ppf;
     Topfind.log := ignore;
 
-    Warnings.parse_options false "@a-4-29-40-41-42-44-45-48-58";
+    let _ = Warnings.parse_options false "@a-4-29-40-41-42-44-45-48-58" in
     Clflags.real_paths := false;
     Toploop.initialize_toplevel_env ();