Can't reference 'dispatch_queue_create_with_target' when min tvOS version is exactly 10.0

Number:rdar://48076044 Date Originated:2019/02/14
Status:Closed Resolved:
Product:tvOS + SDK Product Version:
Classification: Reproducible:Always

The linker fails to find 'dispatch_queue_create_with_target' when the min tvOS version is exactly 10.0.

Steps to Reproduce:

Download test.c and from here:

Then execute

Expected Results:

All green.

Actual Results:

❌ Failed to link with -mtvos-version-min=10.0:
    Undefined symbols for architecture arm64:
      "_dispatch_assert_queue", referenced from:
          _main in test-262928.o
      "_dispatch_assert_queue_not", referenced from:
          _main in test-262928.o
      "_dispatch_queue_create_with_target", referenced from:
          _main in test-262928.o
    ld: symbol(s) not found for architecture arm64
    clang: error: linker command failed with exit code 1 (use -v to see invocation)


I tried with Xcode 9.2, 9.4, 10.1 and 10.2 beta 2, all have the same behavior.


Apple said:

This is a follow-up to Bug ID# 48076044.

Engineering has determined that this issue behaves as intended based on the following information:

These symbols are renamed, please use the SDK.

We consider this issue closed. If you have any questions or concern regarding this issue, please update your report directly (

Thank you for taking the time to notify us of this issue.

By rolfbjarne at Feb. 26, 2019, 5:35 p.m. (reply...)

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