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authorXi Ruoyao <xry111@xry111.site>2023-05-16 03:56:14 +0100
committerTom Stellard <tstellar@redhat.com>2023-05-16 22:03:06 -0700
commit21f3dfbc26736e4299c154e67065652f48279047 (patch)
treeb794171541aab9c7c3174198c2b98b26db1fb055
parent82b4446f25d4b4a0b22f5d4c067c6a920045338a (diff)
downloadllvm-21f3dfbc26736e4299c154e67065652f48279047.tar.gz
[clangd] Fix test failure when it's built with compiler flags unknown by clang
If LLVM is built with a compiler other than clang, the `compile_commands.json` file may contain compiler flags unknown by clang. When a clangd test is copied into the build directory and checked, clangd will pick the unknown flag from the file and cause a test failure. Create an empty `compile_commands.json` in the test directory nested in the build directory to override it. Reviewed By: thesamesam Differential Revision: https://reviews.llvm.org/D150582 (cherry picked from commit 4ddae8b941398a6579d3a6f25aa39a260e441371)
-rw-r--r--clang-tools-extra/clangd/test/CMakeLists.txt10
-rw-r--r--clang-tools-extra/clangd/test/compile_commands.json1
2 files changed, 11 insertions, 0 deletions
diff --git a/clang-tools-extra/clangd/test/CMakeLists.txt b/clang-tools-extra/clangd/test/CMakeLists.txt
index 6bb578263ffc..840fe2bdc12b 100644
--- a/clang-tools-extra/clangd/test/CMakeLists.txt
+++ b/clang-tools-extra/clangd/test/CMakeLists.txt
@@ -28,6 +28,16 @@ configure_lit_site_cfg(
${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py
)
+# Copy an empty compile_commands.json to override the compile_commands.json
+# in the top level build directory. Or if a clangd test involves creating a
+# temporary source file in the build directory and run clangd to check it,
+# it can pick up unrecognizable command options when LLVM is built with
+# another compiler or a different version of Clang.
+configure_file(
+ ${CMAKE_CURRENT_SOURCE_DIR}/compile_commands.json
+ ${CMAKE_CURRENT_BINARY_DIR}/compile_commands.json
+)
+
add_lit_testsuite(check-clangd "Running the Clangd regression tests"
# clangd doesn't put unittest configs in test/unit like every other project.
# Because of that, this needs to pass two folders here, while every other
diff --git a/clang-tools-extra/clangd/test/compile_commands.json b/clang-tools-extra/clangd/test/compile_commands.json
new file mode 100644
index 000000000000..fe51488c7066
--- /dev/null
+++ b/clang-tools-extra/clangd/test/compile_commands.json
@@ -0,0 +1 @@
+[]