1 files changed, 20 insertions, 0 deletions
diff --git a/test/utils.rb b/test/utils.rb
index 70bb5941..54f75f25 100644
--- a/test/utils.rb
+++ b/test/utils.rb
@@ -9,6 +9,26 @@ begin
 rescue LoadError
 end
 
+# Compile OpenSSL with crypto-mdebug and run this test suite with OSSL_MDEBUG=1
+# environment variable to enable memory leak check.
+if ENV["OSSL_MDEBUG"] == "1"
+  if OpenSSL.respond_to?(:print_mem_leaks)
+    OpenSSL.mem_check_start
+
+    END {
+      GC.start
+      case OpenSSL.print_mem_leaks
+      when nil
+        warn "mdebug: check what is printed"
+      when true
+        raise "mdebug: memory leaks detected"
+      end
+    }
+  else
+    warn "OSSL_MDEBUG=1 is specified but OpenSSL is not built with crypto-mdebug"
+  end
+end
+
 require "test/unit"
 require 'tempfile'
 require "rbconfig"