Bug ID: JDK-6911256 Project Coin: Support Automatic Resource Management (ARM) blocks in the compiler

JDK-6911256 : Project Coin: Support Automatic Resource Management (ARM) blocks in the compiler

Type: Bug
Component: tools
Sub-Component: javac
Affected Version: 1.4.0,7

Priority: P3
Status: Closed
Resolution: Fixed
OS: generic,linux
CPU: generic,x86

Submitted: 2009-12-16
Updated: 2018-01-17
Resolved: 2011-03-07

Versions (Unresolved/Resolved/Fixed)

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JDK 7
7 b105Fixed

Related Reports

Duplicate :	JDK-4888664 - RFE: syntactic sugar to simulate C++ stack-allocted object destructor semantics
Duplicate :	JDK-6898332 - Project Coin: ARM Blocks
Relates :	JDK-4988583 - AutomaticException chaining for exception in try and exception thrown in finally
Relates :	JDK-6986416 - Warn of unprotected AutoCloseables in try-with-resources initializers
Relates :	JDK-6970833 - Try-with-resource implementation throws an NPE during Flow analysis
Relates :	JDK-6911261 - Project Coin: Retrofit Automatic Resource Management (ARM) support onto platform APIs
Relates :	JDK-6961571 - Update visitors to support ARM's ElementKind.RESOURCE_VARIABLE
Relates :	JDK-6970749 - javac could provide warnings for unused local variables and private fields
Relates :	JDK-7196163 - Project Coin: Allow final or effectively final variables to be used as resources in try-with-resources
Relates :	JDK-6965277 - Project Coin: Correctness issues in ARM implementation
Relates :	JDK-6970016 - Clean up ARM/try-with-resources implementation
Relates :	JDK-6971877 - Project Coin: improve semantics of suppressed exceptions in try-with-resources
Relates :	JDK-7178324 - Crash when compiling for(i : x) try(AutoCloseable x = ...) {}
Relates :	JDK-6980056 - var in resource specification can be redeclared as exception parameter in catch clause
Relates :	JDK-6179333 - Allow guaranteed disposing of iterators in enhanced for loop
Relates :	JDK-7011920 - Project Coin: Sync with JSR 334 EDR
Relates :	JDK-7014734 - Project Coin: Allow optional trailing semicolon to terminate resources list in try-with-resources
Relates :	JDK-7013420 - Project Coin: remove general expression support from try-with-resources statement
Relates :	JDK-6911258 - Project Coin: Add essential API support for Automatic Resource Management (ARM) blocks
Relates :	JDK-6964740 - Project Coin: More tests for ARM compiler changes
Relates :	JDK-6967065 - add -Xlint warning category for Automatic Resource Management (ARM)
Relates :	JDK-7017104 - improve error reporting for uncaught/undeclared exceptions from try-with-resources
Relates :	JDK-7164542 - try-with-resources: problem with intersection types
Relates :	JDK-7179353 - try-with-resources fails to compile with generic exception parameters
Relates :	JDK-8194978 - Javac produces dead code for try-with-resource

Description

Automatic Resource Management (ARM) is one of the features selected by Project Coin for inclusion in JDK 7.  Support for this language change should be implemented in javac.

See
http://mail.openjdk.java.net/pipermail/coin-dev/2009-February/000011.html
and subsequent discussion.

Comments

PUBLIC COMMENTS See http://hg.openjdk.java.net/jdk7/tl/langtools/rev/13354e1abba7

17-07-2010

EVALUATION A fine idea.

16-12-2009