From d473d33d9f6603452dfe8f5addc20b2108f11fa7 Mon Sep 17 00:00:00 2001
From: Romain Goyet <romain.goyet@numworks.com>
Date: Mon, 30 Sep 2019 09:51:01 +0200
Subject: [PATCH] tool-cache: Use --force-local for tar on Windows to correctly
 deal with paths

---
 packages/tool-cache/src/tool-cache.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/tool-cache/src/tool-cache.ts b/packages/tool-cache/src/tool-cache.ts
index 9ab2deb5ae..a482e0952f 100644
--- a/packages/tool-cache/src/tool-cache.ts
+++ b/packages/tool-cache/src/tool-cache.ts
@@ -201,7 +201,13 @@ export async function extractTar(
 
   dest = dest || (await _createExtractFolder(dest))
   const tarPath: string = await io.which('tar', true)
-  await exec(`"${tarPath}"`, [flags, '-C', dest, '-f', file])
+  const args: string[] = [flags]
+  if (IS_WINDOWS) {
+    // On Windows, absolute path use a ':' (e.g. C:\foo), which is incorrectly recognized as a remote path by tar unless this flag is passed
+    args.push('--force-local')
+  }
+  args.push('-C', dest, '-f', file)
+  await exec(`"${tarPath}"`, args)
 
   return dest
 }