Use regular file for caching stage 1 hash digest instead of symlink, fix zig build caching on Windows

Fix #6500

1 files changed, 4 insertions, 4 deletions

diff --git a/src/link/Wasm.zig b/src/link/Wasm.zig
index e4fd409a4d..320f90de19 100644
--- a/src/link/Wasm.zig
+++ b/src/link/Wasm.zig
@@ -310,8 +310,8 @@ fn linkWithLLD(self: *Wasm, comp: *Compilation) !void {
         digest = man.final();
 
         var prev_digest_buf: [digest.len]u8 = undefined;
-        const prev_digest: []u8 = directory.handle.readLink(id_symlink_basename, &prev_digest_buf) catch |err| blk: {
-            log.debug("WASM LLD new_digest={} readlink error: {}", .{ digest, @errorName(err) });
+        const prev_digest: []u8 = directory.handle.readFile(id_symlink_basename, &prev_digest_buf) catch |err| blk: {
+            log.debug("WASM LLD new_digest={} readFile error: {}", .{ digest, @errorName(err) });
             // Handle this as a cache miss.
             break :blk prev_digest_buf[0..0];
         };
@@ -424,9 +424,9 @@ fn linkWithLLD(self: *Wasm, comp: *Compilation) !void {
     }
 
     if (!self.base.options.disable_lld_caching) {
-        // Update the dangling symlink with the digest. If it fails we can continue; it only
+        // Update the dangling file with the digest. If it fails we can continue; it only
         // means that the next invocation will have an unnecessary cache miss.
-        directory.handle.symLink(&digest, id_symlink_basename, .{}) catch |err| {
+        directory.handle.writeFile(id_symlink_basename, &digest) catch |err| {
             std.log.warn("failed to save linking hash digest symlink: {}", .{@errorName(err)});
         };
         // Again failure here only means an unnecessary cache miss.