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da2361ffb3
Since commit 880ca66b51 (Fix: `while()` can silently ignore incorrect
condition, 2021-08-09, v3.22.0-rc1~238^2~4) we correctly reject the
code
set(paren "(")
while(${paren})
endwhile()
However, rejecting it breaks compatibility with projects that used such
code accidentally. In CMake 3.21 and below, any error in the condition
was ignored because the `false` result exited the loop first. Restore
tolerance of the error for now. A policy will be needed to make it an
error later.
Note that the same condition with `if` was always correctly rejected.
Fixes: #22524
Issue: #23296
Co-authored-by: Brad King <brad.king@kitware.com>
CMake Tests Directory ********************* This directory contains the CMake test suite. See also the `CMake Source Code Guide`_. .. _`CMake Source Code Guide`: ../Help/dev/source.rst Many tests exist as immediate subdirectories, but some tests are organized as follows. * ``CMakeLib/``: Source code, used for tests, that links to the ``CMakeLib`` library defined over in ``Source/``. * ``CMakeOnly/``: Deprecated. Tests that run CMake to generate a project but not build it. Superseded by ``Tests/RunCMake/``. * ``Find*/``: Tests for specific find modules that can only be run on machines with the corresponding packages installed. They are enabled in ``CMakeLists.txt`` by undocumented options used on CI builds. * ``Module/``: Tests for specific CMake modules. * ``RunCMake/``: Tests that run CMake and/or other tools while precisely checking their return code and stdout/stderr content. Useful for testing error cases and diagnostic output.