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-rw-r--r--ChangeLog11
-rw-r--r--eval_intern.h2
-rw-r--r--test/ruby/test_exception.rb9
3 files changed, 21 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 5ad1105e52..a39f2dc505 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Mon Sep 26 15:43:34 2016 Kazuki Yamaguchi <k@rhe.jp>
+
+ * eval_intern.h (TH_PUSH_TAG): Initialize struct rb_vm_tag::tag with
+ Qundef rather than 0 which is equal to Qfalse. Since Kernel#throw(obj)
+ searches a tag with rb_vm_tag::tag == obj, throw(false) can
+ accidentally find an unrelated tag which is not created by
+ Kernel#catch. [ruby-core:77229] [Bug #12743]
+
+ * test/ruby/test_exception.rb (test_throw_false): Add a test case for
+ this.
+
Mon Sep 26 14:36:12 2016 Naotoshi Seo <sonots@gmail.com>
* lib/tempfile.rb: provide default basename parameter for
diff --git a/eval_intern.h b/eval_intern.h
index 9db0fd1bdb..c5210b14de 100644
--- a/eval_intern.h
+++ b/eval_intern.h
@@ -131,7 +131,7 @@ LONG WINAPI rb_w32_stack_overflow_handler(struct _EXCEPTION_POINTERS *);
#define TH_PUSH_TAG(th) do { \
rb_thread_t * const _th = (th); \
struct rb_vm_tag _tag; \
- _tag.tag = 0; \
+ _tag.tag = Qundef; \
_tag.prev = _th->tag;
#define TH_POP_TAG() \
diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index 10489dd5ba..4da3de165b 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -181,6 +181,15 @@ class TestException < Test::Unit::TestCase
}
end
+ def test_throw_false
+ bug12743 = '[ruby-core:77229] [Bug #12743]'
+ assert_raise_with_message(UncaughtThrowError, /false/, bug12743) {
+ Thread.start {
+ throw false
+ }.join
+ }
+ end
+
def test_else_no_exception
begin
assert(true)