diff --git a/ChangeLog b/ChangeLog
index 4a5d5ae60e..2ecd320314 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Wed Aug 13 18:13:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* eval.c (POP_BLOCK): turn on BLOCK_LEFT flag when leaving block.
+
+	* eval.c (proc_invoke): unpack return/break destination when block
+	  is already left.
+
 Wed Aug 13 15:58:31 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* object.c (rb_class_s_alloc): add function prototype to avoid VC++
diff --git a/eval.c b/eval.c
index 2317c8bf95..a03c676068 100644
--- a/eval.c
+++ b/eval.c
@@ -632,6 +632,7 @@ struct BLOCK {
 #define BLOCK_DYNAMIC 2
 #define BLOCK_ORPHAN  4
 #define BLOCK_LAMBDA  8
+#define BLOCK_LEFT   16
 
 static struct BLOCK *ruby_block;
 
@@ -666,12 +667,13 @@ new_blktag()
     _block.block_obj = 0;		\
     ruby_block = &_block
 
-#define POP_BLOCK() 			\
+#define POP_BLOCK() \
    if (_block.tag->flags & (BLOCK_DYNAMIC)) \
        _block.tag->flags |= BLOCK_ORPHAN; \
    else	if (!(_block.scope->flags & SCOPE_DONT_RECYCLE)) \
        rb_gc_force_recycle((VALUE)_block.tag); \
-   ruby_block = _block.prev; 		\
+   ruby_block = _block.prev; \
+   _block.tag->flags |= BLOCK_LEFT; \
 } while (0)
 
 struct RVarmap *ruby_dyna_vars;
@@ -7023,6 +7025,7 @@ proc_invoke(proc, args, self, klass)
     if (klass) _block.frame.last_class = klass;
     ruby_block = &_block;
 
+  again:
     PUSH_ITER(ITER_CUR);
     ruby_frame->iter = ITER_CUR;
     PUSH_TAG(PROT_NONE);
@@ -7035,7 +7038,9 @@ proc_invoke(proc, args, self, klass)
 
     POP_ITER();
     incoming_state = state;
-    if (orphan || ruby_block->tag->dst == state) {
+    if (orphan || pcall ||
+	((ruby_block->tag->flags & BLOCK_LEFT) &&
+	 ruby_block->tag->dst == state)) {
 	state &= TAG_MASK;
     }
     ruby_block = old_block;
@@ -8499,7 +8504,7 @@ intersect_fds(src, dst, max)
 	    if (FD_ISSET(i, src)) {
 		/* Wake up only one thread per fd. */
 		FD_CLR(i, src);
-		++n;
+		n++;
 	    }
 	    else {
 		FD_CLR(i, dst);
diff --git a/sample/test.rb b/sample/test.rb
index 6d2a6cde95..8b8354ad5c 100644
--- a/sample/test.rb
+++ b/sample/test.rb
@@ -1033,6 +1033,34 @@ test_ok(get_block(&lambda).class == Proc)
 test_ok(Proc.new{|a,| a}.call(1,2,3) == 1)
 argument_test(true, Proc.new{|a,|}, 1,2)
 
+def test_return1
+  Proc.new {
+    return 55
+  }.call + 5
+end
+test_ok(test_return1() == 55)
+def test_return2
+  lambda {
+    return 55
+  }.call + 5
+end
+test_ok(test_return2() == 60)
+
+def proc_call(&b)
+  b.call
+end
+def proc_yield()
+  yield
+end
+def proc_return1
+  proc_call{return 42}+1
+end
+test_ok(proc_return1() == 42)
+def proc_return2
+  proc_yield{return 42}+1
+end
+test_ok(proc_return2() == 42)
+
 def ljump_test(state, proc, *args)
   x = state
   begin