Please consider the attached debdiff which basically applies the upstream fix and adds a dep3 header to it.
diff -Nru clojure1.8-1.8.0/debian/changelog clojure1.8-1.8.0/debian/changelog --- clojure1.8-1.8.0/debian/changelog 2018-08-04 17:56:45.000000000 -0300 +++ clojure1.8-1.8.0/debian/changelog 2018-10-10 13:47:36.000000000 -0300 @@ -1,3 +1,11 @@ +clojure1.8 (1.8.0-8) cosmic; urgency=medium + + * debian/patches/03-add-toarray-hint-type-68d8b83138437c18.patch: + Add hint type to toArray method to resolve ambiguity introduced by + JDK 11. (Closes: #910773, LP: #1796985). + + -- Tiago Stürmer Daitx <tiago.da...@ubuntu.com> Wed, 11 Oct 2018 02:12:55 +0000 + clojure1.8 (1.8.0-7) unstable; urgency=medium * Update Vcs-* links to point to the clojure-team repo. diff -Nru clojure1.8-1.8.0/debian/patches/03-add-toarray-hint-type-68d8b83138437c18.patch clojure1.8-1.8.0/debian/patches/03-add-toarray-hint-type-68d8b83138437c18.patch --- clojure1.8-1.8.0/debian/patches/03-add-toarray-hint-type-68d8b83138437c18.patch 1969-12-31 21:00:00.000000000 -0300 +++ clojure1.8-1.8.0/debian/patches/03-add-toarray-hint-type-68d8b83138437c18.patch 2018-10-10 13:45:50.000000000 -0300 @@ -0,0 +1,37 @@ +Description: Add hint to overloaded toArray method + OpenJDK 11 added a new overload to the toArray method that + causes a slight API breakage. This requires calls to toArray + to set a type hint in order to prevent the exception + java.lang.IllegalArgumentException. +Origin: https://github.com/clojure/clojure/commit/68d8b83138437c18f1d5cf9ba46c056aa2701d23 +Bug: https://dev.clojure.org/jira/browse/CLJ-2374 +Bug-Ubuntu: https://launchpad.net/bugs/1796985 +Applied-Upstream: https://github.com/clojure/clojure/commit/68d8b83138437c18f1d5cf9ba46c056aa2701d23 +Last-Update: 2018-10-10 +--- +This patch header follows DEP-3: http://dep.debian.net/deps/dep3/ + +From 68d8b83138437c18f1d5cf9ba46c056aa2701d23 Mon Sep 17 00:00:00 2001 +From: Alex Miller <alex.mil...@cognitect.com> +Date: Mon, 1 Oct 2018 09:29:37 -0500 +Subject: [PATCH] CLJ-2374 Add type hint to toArray to resolve ambiguity in JDK + 11 + +Signed-off-by: Stuart Halloway <s...@cognitect.com> +--- + src/clj/clojure/gvec.clj | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/clj/clojure/gvec.clj b/src/clj/clojure/gvec.clj +index 3c4007379..6208f5539 100644 +--- a/src/clj/clojure/gvec.clj ++++ b/src/clj/clojure/gvec.clj +@@ -397,7 +397,7 @@ + (containsAll [this c] (every? #(.contains this %) c)) + (isEmpty [_] (zero? cnt)) + (toArray [this] (into-array Object this)) +- (toArray [this arr] ++ (^objects toArray [this ^objects arr] + (if (>= (count arr) cnt) + (do + (dotimes [i cnt] diff -Nru clojure1.8-1.8.0/debian/patches/series clojure1.8-1.8.0/debian/patches/series --- clojure1.8-1.8.0/debian/patches/series 2018-03-19 16:31:31.000000000 -0300 +++ clojure1.8-1.8.0/debian/patches/series 2018-10-10 13:46:55.000000000 -0300 @@ -1 +1,2 @@ 02-modify-cli-usage.patch +03-add-toarray-hint-type-68d8b83138437c18.patch
