* proc.c (rb_block_clear_env_self): clear by Qfalse intead of Qnil.

  [Bug #11409]
* test/ruby/test_eval.rb: add tests for this issue,
  written by @0x0dea.
  https://github.com/ruby/ruby/pull/988



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51480 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/proc.c b/proc.c
index 2eb46ad5d2..4b67c69755 100644
--- a/proc.c
+++ b/proc.c
@@ -670,7 +670,7 @@ rb_block_clear_env_self(VALUE proc)
     rb_env_t *env;
     GetProcPtr(proc, po);
     GetEnvPtr(rb_vm_proc_envval(po), env);
-    env->env[0] = Qnil;
+    env->env[0] = Qfalse;
     return proc;
 }