* eval.c (rb_frame_callee): check if prev_cfp can be accessible.

  a patch from Yoshinori Sano <yoshinori.sano at gmail.com> in
  [ruby-dev:30252].  solves [ruby-dev:30200] and [ruby-core:9856].

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@11628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 16 insertions, 4 deletions

diff --git a/ChangeLog b/ChangeLog
index b62c36882..06e48d57d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Feb  5 04:09:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* eval.c (rb_frame_callee): check if prev_cfp can be accessible.
+	  a patch from Yoshinori Sano <yoshinori.sano at gmail.com> in
+	  [ruby-dev:30252].  solves [ruby-dev:30200] and [ruby-core:9856].
+
 Sun Feb  4 20:34:41 2007  Kouhei Sutou  <kou@cozmixng.org>
 
 	* test/rss/rss-assertions.rb: removed needless code for backward
diff --git a/eval.c b/eval.c
index 639649616..e8e2e7061 100644
--- a/eval.c
+++ b/eval.c
@@ -1879,7 +1879,13 @@ rb_frame_this_func(void)
 ID
 rb_frame_callee(void)
 {
-    return frame_func_id(GET_THREAD()->cfp + 1);
+    yarv_thread_t *th = GET_THREAD();
+    yarv_control_frame_t *prev_cfp = YARV_PREVIOUS_CONTROL_FRAME(th->cfp);
+    /* check if prev_cfp can be accessible */
+    if ((void *)(th->stack + th->stack_size) == (void *)(prev_cfp)) {
+        return 0;
+    }
+    return frame_func_id(prev_cfp);
 }
 
 void
diff --git a/version.h b/version.h
index 872dea143..99b18b9c9 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-02-04"
+#define RUBY_RELEASE_DATE "2007-02-05"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20070204
+#define RUBY_RELEASE_CODE 20070205
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 2
-#define RUBY_RELEASE_DAY 4
+#define RUBY_RELEASE_DAY 5
 
 RUBY_EXTERN const char ruby_version[];
 RUBY_EXTERN const char ruby_release_date[];