diff --git a/jdk/src/java.base/share/classes/java/io/FilterOutputStream.java b/jdk/src/java.base/share/classes/java/io/FilterOutputStream.java index 7d5b0c9c074..85e4dd1b281 100644 --- a/jdk/src/java.base/share/classes/java/io/FilterOutputStream.java +++ b/jdk/src/java.base/share/classes/java/io/FilterOutputStream.java @@ -48,6 +48,8 @@ class FilterOutputStream extends OutputStream { */ protected OutputStream out; + private boolean closed; + /** * Creates an output stream filter built on top of the specified * underlying output stream. @@ -144,9 +146,9 @@ class FilterOutputStream extends OutputStream { * Closes this output stream and releases any system resources * associated with the stream. *
- * The close
method of FilterOutputStream
- * calls its flush
method, and then calls the
- * close
method of its underlying output stream.
+ * When not already closed, the {@code close} method of {@code
+ * FilterOutputStream} calls its {@code flush} method, and then
+ * calls the {@code close} method of its underlying output stream.
*
* @exception IOException if an I/O error occurs.
* @see java.io.FilterOutputStream#flush()
@@ -154,6 +156,9 @@ class FilterOutputStream extends OutputStream {
*/
@SuppressWarnings("try")
public void close() throws IOException {
+ if (closed)
+ return;
+ closed = true;
try (OutputStream ostream = out) {
flush();
}
diff --git a/jdk/test/java/io/etc/FailingFlushAndClose.java b/jdk/test/java/io/etc/FailingFlushAndClose.java
index 3a07d54ff0b..2c75abce697 100644
--- a/jdk/test/java/io/etc/FailingFlushAndClose.java
+++ b/jdk/test/java/io/etc/FailingFlushAndClose.java
@@ -25,7 +25,7 @@ import java.io.*;
/**
* @test
- * @bug 7015589
+ * @bug 7015589 8054565
* @summary Test that buffering streams are considered closed even when the
* close or flush from the underlying stream fails.
*/
@@ -165,7 +165,7 @@ public class FailingFlushAndClose {
}
}
- static void testFailingClose(InputStream in) throws IOException {
+ static InputStream testFailingClose(InputStream in) throws IOException {
System.out.println(in.getClass());
in.read(new byte[100]);
try {
@@ -176,9 +176,10 @@ public class FailingFlushAndClose {
in.read(new byte[100]);
fail("read did not fail");
} catch (IOException expected) { }
+ return in;
}
- static void testFailingClose(OutputStream out) throws IOException {
+ static OutputStream testFailingClose(OutputStream out) throws IOException {
System.out.println(out.getClass());
out.write(1);
try {
@@ -190,9 +191,10 @@ public class FailingFlushAndClose {
if (!(out instanceof BufferedOutputStream))
fail("write did not fail");
} catch (IOException expected) { }
+ return out;
}
- static void testFailingFlush(OutputStream out) throws IOException {
+ static OutputStream testFailingFlush(OutputStream out) throws IOException {
System.out.println(out.getClass());
out.write(1);
try {
@@ -206,9 +208,27 @@ public class FailingFlushAndClose {
fail("close did not fail");
} catch (IOException expected) { }
}
+ return out;
}
- static void testFailingClose(Reader r) throws IOException {
+ static void closeAgain(InputStream in) throws IOException {
+ // assert the given stream should already be closed.
+ try {
+ in.close();
+ } catch (IOException expected) {
+ fail("unexpected IOException from subsequent close");
+ }
+ }
+ static void closeAgain(OutputStream out) throws IOException {
+ // assert the given stream should already be closed.
+ try {
+ out.close();
+ } catch (IOException expected) {
+ fail("unexpected IOException from subsequent close");
+ }
+ }
+
+ static Reader testFailingClose(Reader r) throws IOException {
System.out.println(r.getClass());
r.read(new char[100]);
try {
@@ -219,9 +239,10 @@ public class FailingFlushAndClose {
r.read(new char[100]);
fail("read did not fail");
} catch (IOException expected) { }
+ return r;
}
- static void testFailingClose(Writer w) throws IOException {
+ static Writer testFailingClose(Writer w) throws IOException {
System.out.println(w.getClass());
w.write("message");
try {
@@ -232,9 +253,10 @@ public class FailingFlushAndClose {
w.write("another message");
fail("write did not fail");
} catch (IOException expected) { }
+ return w;
}
- static void testFailingFlush(Writer w) throws IOException {
+ static Writer testFailingFlush(Writer w) throws IOException {
System.out.println(w.getClass());
w.write("message");
try {
@@ -249,18 +271,38 @@ public class FailingFlushAndClose {
fail("close did not fail");
} catch (IOException expected) { }
}
+ return w;
+ }
+
+ static Reader closeAgain(Reader r) throws IOException {
+ // assert the given stream should already be closed.
+ try {
+ r.close();
+ } catch (IOException expected) {
+ fail("unexpected IOException from subsequent close");
+ }
+ return r;
+ }
+ static Writer closeAgain(Writer w) throws IOException {
+ // assert the given stream should already be closed.
+ try {
+ w.close();
+ } catch (IOException expected) {
+ fail("unexpected IOException from subsequent close");
+ }
+ return w;
}
public static void main(String[] args) throws IOException {
- testFailingClose(new BufferedInputStream(new FailingCloseInputStream()));
- testFailingClose(new BufferedOutputStream(new FailingCloseOutputStream()));
+ closeAgain(testFailingClose(new BufferedInputStream(new FailingCloseInputStream())));
+ closeAgain(testFailingClose(new BufferedOutputStream(new FailingCloseOutputStream())));
- testFailingClose(new BufferedReader(new FailingCloseReader()));
- testFailingClose(new BufferedWriter(new FailingCloseWriter()));
+ closeAgain(testFailingClose(new BufferedReader(new FailingCloseReader())));
+ closeAgain(testFailingClose(new BufferedWriter(new FailingCloseWriter())));
- testFailingFlush(new BufferedOutputStream(new FailingFlushOutputStream()));
- testFailingFlush(new BufferedWriter(new FailingFlushWriter()));
+ closeAgain(testFailingFlush(new BufferedOutputStream(new FailingFlushOutputStream())));
+ closeAgain(testFailingFlush(new BufferedWriter(new FailingFlushWriter())));
if (failed > 0)
throw new RuntimeException(failed + " test(s) failed - see log for details");