From 96bd5f640b01caaba5028875ffa1367142afb0a4 Mon Sep 17 00:00:00 2001
From: Dmitriy Vasyura <dmitriv@microsoft.com>
Date: Thu, 1 Jan 2026 16:48:44 -0800
Subject: [PATCH 1/2] Do not assume stdout/stderr are defined when spawning a
 child process.

---
 extensions/git/src/git.ts | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/extensions/git/src/git.ts b/extensions/git/src/git.ts
index 3fb80e0ee98..b5be1268884 100644
--- a/extensions/git/src/git.ts
+++ b/extensions/git/src/git.ts
@@ -2684,19 +2684,23 @@ export class Repository {
 
 				if (limit !== 0 && parser.status.length > limit) {
 					child.removeListener('close', onClose);
-					child.stdout!.removeListener('data', onStdoutData);
+					child.stdout?.removeListener('data', onStdoutData);
 					child.kill();
 
 					c({ status: parser.status.slice(0, limit), statusLength: parser.status.length, didHitLimit: true });
 				}
 			};
 
-			child.stdout!.setEncoding('utf8');
-			child.stdout!.on('data', onStdoutData);
+			if (child.stdout) {
+				child.stdout.setEncoding('utf8');
+				child.stdout.on('data', onStdoutData);
+			}
 
 			const stderrData: string[] = [];
-			child.stderr!.setEncoding('utf8');
-			child.stderr!.on('data', raw => stderrData.push(raw as string));
+			if (child.stderr) {
+				child.stderr.setEncoding('utf8');
+				child.stderr.on('data', raw => stderrData.push(raw as string));
+			}
 
 			child.on('error', cpErrorHandler(e));
 			child.on('close', onClose);

From be8b8bfdcc7e73ebecc74cc4227af5df1e313c95 Mon Sep 17 00:00:00 2001
From: Dmitriy Vasyura <dmitriv@microsoft.com>
Date: Fri, 2 Jan 2026 16:47:47 -0800
Subject: [PATCH 2/2] Add more stdio checks when spawning git processes.

---
 extensions/git/src/git.ts        | 10 +++++++++-
 extensions/git/src/repository.ts | 22 +++++++++++++++++-----
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/extensions/git/src/git.ts b/extensions/git/src/git.ts
index b5be1268884..f17163f9f55 100644
--- a/extensions/git/src/git.ts
+++ b/extensions/git/src/git.ts
@@ -1924,7 +1924,15 @@ export class Repository {
 	async stage(path: string, data: Uint8Array): Promise<void> {
 		const relativePath = this.sanitizeRelativePath(path);
 		const child = this.stream(['hash-object', '--stdin', '-w', '--path', relativePath], { stdio: [null, null, null] });
-		child.stdin!.end(data);
+
+		if (!child.stdin) {
+			throw new GitError({
+				message: 'Failed to spawn git process',
+				exitCode: -1
+			});
+		}
+
+		child.stdin.end(data);
 
 		const { exitCode, stdout } = await exec(child);
 		const hash = stdout.toString('utf8');
diff --git a/extensions/git/src/repository.ts b/extensions/git/src/repository.ts
index 7977887182f..0e733707674 100644
--- a/extensions/git/src/repository.ts
+++ b/extensions/git/src/repository.ts
@@ -2347,7 +2347,15 @@ export class Repository implements Disposable {
 
 				// https://git-scm.com/docs/git-check-ignore#git-check-ignore--z
 				const child = this.repository.stream(['check-ignore', '-v', '-z', '--stdin'], { stdio: [null, null, null] });
-				child.stdin!.end(filePaths.join('\0'), 'utf8');
+
+				if (!child.stdin) {
+					return reject(new GitError({
+						message: 'Failed to spawn git process',
+						exitCode: -1
+					}));
+				}
+
+				child.stdin.end(filePaths.join('\0'), 'utf8');
 
 				const onExit = (exitCode: number) => {
 					if (exitCode === 1) {
@@ -2369,12 +2377,16 @@ export class Repository implements Disposable {
 					data += raw;
 				};
 
-				child.stdout!.setEncoding('utf8');
-				child.stdout!.on('data', onStdoutData);
+				if (child.stdout) {
+					child.stdout.setEncoding('utf8');
+					child.stdout.on('data', onStdoutData);
+				}
 
 				let stderr: string = '';
-				child.stderr!.setEncoding('utf8');
-				child.stderr!.on('data', raw => stderr += raw);
+				if (child.stderr) {
+					child.stderr.setEncoding('utf8');
+					child.stderr.on('data', raw => stderr += raw);
+				}
 
 				child.on('error', reject);
 				child.on('exit', onExit);