merge revision(s) r47288: [Backport ruby#10153]

	* io.c (io_close): ignore only "closed stream" IOError and
	  NoMethodError, do not swallow other exceptions at the end of
	  block.  [ruby-core:64463] [Bug ruby#10153]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47486 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: nagachika

ChangeLog

@@ -1,3 +1,9 @@
+Wed Sep 10 03:29:48 2014  Nobuyoshi Nakada  <[email protected]>
+
+	* io.c (io_close): ignore only "closed stream" IOError and
+	  NoMethodError, do not swallow other exceptions at the end of
+	  block.  [ruby-core:64463] [Bug #10153]
+
 Wed Sep 10 03:17:13 2014  Nobuyoshi Nakada  <[email protected]>
 
 	* enc/trans/euckr-tbl.rb (EUCKR_TO_UCS_TBL): add missing euro and

io.c

@@ -590,6 +590,8 @@ is_socket(int fd, VALUE path)
 }
 #endif
 
+static const char closed_stream[] = "closed stream";
+
 void
 rb_eof_error(void)
 {
@@ -616,7 +618,7 @@ rb_io_check_closed(rb_io_t *fptr)
 {
     rb_io_check_initialized(fptr);
     if (fptr->fd < 0) {
-	rb_raise(rb_eIOError, "closed stream");
+	rb_raise(rb_eIOError, closed_stream);
     }
 }
 
@@ -1075,7 +1077,7 @@ int
 rb_io_wait_readable(int f)
 {
     if (f < 0) {
-	rb_raise(rb_eIOError, "closed stream");
+	rb_raise(rb_eIOError, closed_stream);
     }
     switch (errno) {
       case EINTR:
@@ -1101,7 +1103,7 @@ int
 rb_io_wait_writable(int f)
 {
     if (f < 0) {
-	rb_raise(rb_eIOError, "closed stream");
+	rb_raise(rb_eIOError, closed_stream);
     }
     switch (errno) {
       case EINTR:
@@ -4062,7 +4064,7 @@ finish_writeconv(rb_io_t *fptr, int noalloc)
                 }
                 if (rb_io_wait_writable(fptr->fd)) {
                     if (fptr->fd < 0)
-                        return noalloc ? Qtrue : rb_exc_new3(rb_eIOError, rb_str_new_cstr("closed stream"));
+                        return noalloc ? Qtrue : rb_exc_new3(rb_eIOError, rb_str_new_cstr(closed_stream));
                     goto retry;
                 }
                 return noalloc ? Qtrue : INT2NUM(errno);
@@ -4344,13 +4346,31 @@ rb_io_close_m(VALUE io)
 static VALUE
 io_call_close(VALUE io)
 {
-    return rb_funcall(io, rb_intern("close"), 0, 0);
+    rb_check_funcall(io, rb_intern("close"), 0, 0);
+    return io;
+}
+
+static VALUE
+ignore_closed_stream(VALUE io, VALUE exc)
+{
+    enum {mesg_len = sizeof(closed_stream)-1};
+    VALUE mesg = rb_attr_get(exc, rb_intern("mesg"));
+    if (!RB_TYPE_P(mesg, T_STRING) ||
+	RSTRING_LEN(mesg) != mesg_len ||
+	memcmp(RSTRING_PTR(mesg), closed_stream, mesg_len)) {
+	rb_exc_raise(exc);
+    }
+    return io;
 }
 
 static VALUE
 io_close(VALUE io)
 {
-    return rb_rescue(io_call_close, io, 0, 0);
+    VALUE closed = rb_check_funcall(io, rb_intern("closed?"), 0, 0);
+    if (closed != Qundef && RTEST(closed)) return io;
+    rb_rescue2(io_call_close, io, ignore_closed_stream, io,
+	       rb_eIOError, (VALUE)0);
+    return io;
 }
 
 /*

test/ruby/test_io.rb

@@ -2995,4 +2995,13 @@ def test_sysread_unlocktmp_ensure
   ensure
     t.kill
   end
+
+  def test_exception_at_close
+    bug10153 = '[ruby-core:64463] [Bug #10153] exception in close at the end of block'
+    assert_raise(Errno::EBADF, bug10153) do
+      IO.pipe do |r, w|
+        assert_nothing_raised {IO.open(w.fileno) {}}
+      end
+    end
+  end
 end

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.2"
 #define RUBY_RELEASE_DATE "2014-09-10"
-#define RUBY_PATCHLEVEL 231
+#define RUBY_PATCHLEVEL 232
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 9