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avoid false positive PermissionError in declare_dependency #14342

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Merged
merged 1 commit into from
Apr 24, 2025
Merged

avoid false positive PermissionError in declare_dependency #14342

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18 changes: 8 additions & 10 deletions mesonbuild/interpreter/interpreter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -703,20 +703,18 @@ def func_declare_dependency(self, node: mparser.BaseNode, args: T.List[TYPE_var]
version = self.project_version
d_module_versions = kwargs['d_module_versions']
d_import_dirs = self.extract_incdirs(kwargs, 'd_import_dirs')
srcdir = Path(self.environment.source_dir)
srcdir = self.environment.source_dir
subproject_dir = os.path.abspath(os.path.join(srcdir, self.subproject_dir))
project_root = os.path.abspath(os.path.join(srcdir, self.root_subdir))
# convert variables which refer to an -uninstalled.pc style datadir
for k, v in variables.items():
if not v:
FeatureNew.single_use('empty variable value in declare_dependency', '1.4.0', self.subproject, location=node)
try:
p = Path(v)
except ValueError:
continue
else:
if not self.is_subproject() and srcdir / self.subproject_dir in p.parents:
continue
if p.is_absolute() and p.is_dir() and srcdir / self.root_subdir in [p] + list(Path(os.path.abspath(p)).parents):
variables[k] = P_OBJ.DependencyVariableString(v)
if os.path.isabs(v) \
and (self.is_subproject() or not is_parent_path(subproject_dir, v)) \
and is_parent_path(project_root, v) \
and os.path.isdir(v):
variables[k] = P_OBJ.DependencyVariableString(v)

dep = dependencies.InternalDependency(version, incs, compile_args,
link_args, libs, libs_whole, sources, extra_files,
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7 changes: 7 additions & 0 deletions test cases/unit/125 declare_dep var/meson.build
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@@ -0,0 +1,7 @@
project('foo')

declare_dependency(
variables: {
'dir': get_option('dir')
}
)
1 change: 1 addition & 0 deletions test cases/unit/125 declare_dep var/meson_options.txt
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@@ -0,0 +1 @@
option('dir', type: 'string')
12 changes: 12 additions & 0 deletions unittests/linuxliketests.py
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Expand Up @@ -1862,6 +1862,18 @@ def test_top_options_in_sp(self):
testdir = os.path.join(self.unit_test_dir, '124 pkgsubproj')
self.init(testdir)

def test_unreadable_dir_in_declare_dep(self):
testdir = os.path.join(self.unit_test_dir, '125 declare_dep var')
tmpdir = Path(tempfile.mkdtemp())
self.addCleanup(windows_proof_rmtree, tmpdir)
declaredepdir = tmpdir / 'test'
declaredepdir.mkdir()
try:
tmpdir.chmod(0o444)
self.init(testdir, extra_args=f'-Ddir={declaredepdir}')
finally:
tmpdir.chmod(0o755)

Comment on lines +1870 to +1876
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This is essentially testing a design bug in the python standard library.

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@eli-schwartz eli-schwartz Apr 17, 2025 •
edited
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To be clear, the purpose of my comment here is that I'm not convinced we need another unittest in order to check that this case doesn't regress.

I'm not even convinced that we're fixing a bug here at all -- just avoiding a slow op.

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It's just an optimization... But since it was giving a PermissionError it was a buggy optimization which is why I added the test.

def check_has_flag(self, compdb, src, argument):
for i in compdb:
if src in i['file']:
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