fix(lint): don't crash when missing description

2 files changed, 16 insertions, 2 deletions

diff --git a/spec/lint_spec.lua b/spec/lint_spec.lua
index b205cc57..847c9800 100644
--- a/spec/lint_spec.lua
+++ b/spec/lint_spec.lua
@@ -93,5 +93,19 @@ describe("luarocks lint #integration", function()
          ]], finally)
          assert.is_false(run.luarocks_bool("lint no_build_table-1.0-1.rockspec"))
       end)
+
+      it("no description field", function()
+         write_file("nodesc-1.0-1.rockspec", [[
+            package = "nodesc"
+            version = "0.1-1"
+            source = {
+               url = "http://example.com/foo/tar.gz"
+            }
+            dependencies = {
+               "lua >= 5.1"
+            }
+         ]], finally)
+         assert.is_false(run.luarocks_bool("lint nodesc-1.0-1.rockspec"))
+      end)
    end)
 end)
diff --git a/src/luarocks/cmd/lint.lua b/src/luarocks/cmd/lint.lua
index 47a3da90..738503ce 100644
--- a/src/luarocks/cmd/lint.lua
+++ b/src/luarocks/cmd/lint.lua
@@ -39,8 +39,8 @@ function lint.command(args)
    -- Making 'lint' alone be stricter shouldn't be a problem,
    -- because extra-strict checks is what lint-type commands
    -- are all about.
-   if not rs.description.license then
-      util.printerr("Rockspec has no license field.")
+   if not rs.description or not rs.description.license then
+      util.printerr("Rockspec has no description.license field.")
       ok = false
    end