Check extensions.autoUpdate. (#4151)

Author: sean-mcmanus

Extension/CHANGELOG.md

@@ -1,11 +1,12 @@
 # C/C++ for Visual Studio Code Change Log
 
-## Version 0.25.1: August 27, 2019
+## Version 0.25.1: August 28, 2019
 ### Bug Fixes
 * Fix `Switch Header/Source` for `.H` and `.C` targets. [#3048](https://github.com/microsoft/vscode-cpptools/issues/3048)
+* Fix `C_Cpp.updateChannel` not respecting `extensions.autoUpdate`. [#3632](https://github.com/microsoft/vscode-cpptools/issues/3632)
 * Fix duplicate content appearing after formatting of a new file (2nd fix). [#4091](https://github.com/microsoft/vscode-cpptools/issues/4091)
 * Fix links in `Log Diagnostics` output. [#4122](https://github.com/microsoft/vscode-cpptools/issues/4122)
-* Fix `NullReferenceException` when debugging if `"description"` is missing. [#4125}(https://github.com/microsoft/vscode-cpptools/issues/4125)
+* Fix `NullReferenceException` when debugging if `"description"` is missing. [#4125](https://github.com/microsoft/vscode-cpptools/issues/4125)
 * Fix `files.exclude` processing when using `\\`. [#4127](https://github.com/microsoft/vscode-cpptools/issues/4127)
 * Fix bug when attaching to an elevated process using GDB. [#4133](https://github.com/microsoft/vscode-cpptools/issues/4133)
 * Fix IntelliSense-based `Go to Definition` failing for a nested class in a template class. [#4135](https://github.com/microsoft/vscode-cpptools/issues/4135)

Extension/src/githubAPI.ts

@@ -8,6 +8,7 @@ import { PackageVersion } from './packageVersion';
 import * as util from './common';
 import { PlatformInformation } from './platform';
 import { OutgoingHttpHeaders } from 'http';
+import * as vscode from 'vscode';
 
 const testingInsidersVsixInstall: boolean = false; // Change this to true to enable testing of the Insiders vsix installation.
 
@@ -170,6 +171,10 @@ export async function getTargetBuildInfo(updateChannel: string): Promise<BuildIn
  * @return The Build if the user should update to it, otherwise undefined.
  */
 function getTargetBuild(builds: Build[], userVersion: PackageVersion, updateChannel: string): Build {
+    if (!vscode.workspace.getConfiguration("extensions", null).get<boolean>("autoUpdate")) {
+        return undefined;
+    }
+
     // Get predicates to determine the build to install, if any
     let needsUpdate: (installed: PackageVersion, target: PackageVersion) => boolean;
     let useBuild: (build: Build) => boolean;