1 files changed, 27 insertions, 0 deletions
diff --git a/test/mkmf/test_sizeof.rb b/test/mkmf/test_sizeof.rb
new file mode 100644
index 0000000000..2e277d302b
--- /dev/null
+++ b/test/mkmf/test_sizeof.rb
@@ -0,0 +1,27 @@
+require 'test/unit'
+require 'mkmf'
+require 'tmpdir'
+
+$extout = '$(topdir)/'+RbConfig::CONFIG["EXTOUT"]
+RbConfig::CONFIG['topdir'] = CONFIG['topdir'] = File.expand_path(CONFIG['topdir'])
+RbConfig::CONFIG["extout"] = CONFIG["extout"] = $extout
+$extout_prefix = "$(extout)$(target_prefix)/"
+
+class TestMkmf < Test::Unit::TestCase
+  def setup
+    @tmpdir = Dir.mktmpdir
+    @mkmfobj = Object.new
+  end
+  def mkmf(*args, &block)
+    @mkmfobj.instance_eval(*args, &block)
+  end
+
+  def test_sizeof
+    Dir.chdir(@tmpdir) do
+      open("confdefs.h", "w") {|f|
+        f.puts "typedef struct {char x;} test1_t;"
+      }
+      mkmf {check_sizeof("test1_t", "confdefs.h")} rescue puts File.read("mkmf.log")
+    end
+  end
+end