llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-lldb
Author: Michael Buch (Michael137)
<details>
<summary>Changes</summary>
These tests were failing on the LLDB public matrix build-bots for older clang
versions:
```
clang-7: warning: argument unused during compilation: '-nostdlib++'
[-Wunused-command-line-argument]
error: invalid value 'c++20' in '-std=c++20'
note: use 'c++98' or 'c++03' for 'ISO C++ 1998 with amendments' standard
note: use 'gnu++98' or 'gnu++03' for 'ISO C++ 1998 with amendments and GNU
extensions' standard
note: use 'c++11' for 'ISO C++ 2011 with amendments' standard
note: use 'gnu++11' for 'ISO C++ 2011 with amendments and GNU extensions'
standard
note: use 'c++14' for 'ISO C++ 2014 with amendments' standard
note: use 'gnu++14' for 'ISO C++ 2014 with amendments and GNU extensions'
standard
note: use 'c++17' for 'ISO C++ 2017 with amendments' standard
note: use 'gnu++17' for 'ISO C++ 2017 with amendments and GNU extensions'
standard
note: use 'c++2a' for 'Working draft for ISO C++ 2020' standard
note: use 'gnu++2a' for 'Working draft for ISO C++ 2020 with GNU extensions'
standard
make: *** [main.o] Error 1
```
The test fails because we try to compile it with `-std=c++20` (which is
required for std::chrono::{days,weeks,months,years}) on clang versions that
don't support the `-std=c++20` flag.
We could change the test to conditionally compile the C++20 parts of the test
based on the `-std=` flag and have two versions of the python tests, one for
the C++11 chrono features and one for the C++20 features.
This patch instead just disables the test on older clang versions (because it's
simpler and we don't really lose important coverage).
---
Full diff: https://github.com/llvm/llvm-project/pull/70544.diff
1 Files Affected:
- (modified)
lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/chrono/TestDataFormatterLibcxxChrono.py
(+1)
``````````diff
diff --git
a/lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/chrono/TestDataFormatterLibcxxChrono.py
b/lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/chrono/TestDataFormatterLibcxxChrono.py
index 076b0d07b88aec7..b2f86817f3b0e8f 100644
---
a/lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/chrono/TestDataFormatterLibcxxChrono.py
+++
b/lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/chrono/TestDataFormatterLibcxxChrono.py
@@ -11,6 +11,7 @@
class LibcxxChronoDataFormatterTestCase(TestBase):
@add_test_categories(["libc++"])
+ @skipIf(compiler="clang", compiler_version=["<", "11.0"])
def test_with_run_command(self):
"""Test that that file and class static variables display correctly."""
self.build()
``````````
</details>
https://github.com/llvm/llvm-project/pull/70544
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