Fix sandbox violation when using subproject as a symlink

Fix "Tried to grab file outside current (sub)project" error when subproject exists within
a source tree but it is used through a symlink. Using subprojects as symlinks is very useful
feature when migrating an existing codebase to meson that all sources do not need to be
immediately moved to subprojects folder.

1 files changed, 13 insertions, 0 deletions

diff --git a/unittests/allplatformstests.py b/unittests/allplatformstests.py
index 42bc60e..71e919e 100644
--- a/unittests/allplatformstests.py
+++ b/unittests/allplatformstests.py
@@ -4263,3 +4263,16 @@ class AllPlatformTests(BasePlatformTests):
         if self.backend is Backend.ninja:
             self.assertIn('Generating file.txt with a custom command', out)
             self.assertIn('Generating subdir/file.txt with a custom command', out)
+
+    def test_symlinked_subproject(self):
+        testdir = os.path.join(self.unit_test_dir, '106 subproject symlink')
+        subproject_dir = os.path.join(testdir, 'subprojects')
+        subproject = os.path.join(testdir, 'symlinked_subproject')
+        symlinked_subproject = os.path.join(testdir, 'subprojects', 'symlinked_subproject')
+        if not os.path.exists(subproject_dir):
+            os.mkdir(subproject_dir)
+        os.symlink(subproject, symlinked_subproject)
+        self.addCleanup(os.remove, symlinked_subproject)
+
+        self.init(testdir)
+        self.build()