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-rw-r--r--nixpkgs/pkgs/development/libraries/mp4v2/default.nix3
-rw-r--r--nixpkgs/pkgs/development/libraries/mp4v2/fix-build-clang.patch13
2 files changed, 16 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/mp4v2/default.nix b/nixpkgs/pkgs/development/libraries/mp4v2/default.nix
index 3a036fcf6fbf..7a6bbb552027 100644
--- a/nixpkgs/pkgs/development/libraries/mp4v2/default.nix
+++ b/nixpkgs/pkgs/development/libraries/mp4v2/default.nix
@@ -19,6 +19,9 @@ stdenv.mkDerivation rec {
       url = "https://git.archlinux.org/svntogit/packages.git/plain/trunk/libmp4v2-c++11.patch?id=203f5a72bc97ffe089b424c47b07dd9eaea35713";
       sha256 = "0sbn0il7lmk77yrjyb4f0a3z3h8gsmdkscvz5n9hmrrrhrwf672w";
     })
+  ] ++ lib.optionals stdenv.cc.isClang [
+    # unbreak build with Clang≄6 (C++14 by default). Based on https://reviews.freebsd.org/rP458678
+    ./fix-build-clang.patch
   ];
 
   NIX_CFLAGS_COMPILE = [ "-Wno-error=narrowing" ];
diff --git a/nixpkgs/pkgs/development/libraries/mp4v2/fix-build-clang.patch b/nixpkgs/pkgs/development/libraries/mp4v2/fix-build-clang.patch
new file mode 100644
index 000000000000..5d99f1951f7a
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/mp4v2/fix-build-clang.patch
@@ -0,0 +1,13 @@
+diff --git a/src/mp4.cpp b/src/mp4.cpp
+index c2a7238..9bb3e38 100644
+--- a/src/mp4.cpp
++++ b/src/mp4.cpp
+@@ -870,7 +870,7 @@ MP4FileHandle MP4ReadProvider( const char* fileName, const MP4FileProvider* file
+         }
+ 
+         catch (...) {
+-            return MP4_INVALID_TRACK_ID;
++            return NULL;
+         }
+     }
+