1 files changed, 12 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/read_file_config.cpp b/clang-tools-extra/test/clang-tidy/read_file_config.cpp
new file mode 100644
index 00000000000..aacdad1cc0a
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/read_file_config.cpp
@@ -0,0 +1,12 @@
+// RUN: mkdir -p %T/read-file-config/
+// RUN: cp %s %T/read-file-config/test.cpp
+// RUN: echo 'Checks: "-*,modernize-use-nullptr"' > %T/read-file-config/.clang-tidy
+// RUN: echo '[{"command": "cc -c -o test.o test.cpp", "directory": "%T/read-file-config", "file": "%T/read-file-config/test.cpp"}]' > %T/read-file-config/compile_commands.json
+// RUN: clang-tidy %T/read-file-config/test.cpp | not grep "warning: .*\[clang-analyzer-deadcode.DeadStores\]$"
+// RUN: clang-tidy -checks="-*,clang-analyzer-*" %T/read-file-config/test.cpp | grep "warning: .*\[clang-analyzer-deadcode.DeadStores\]$"
+
+void f() {
+  int x;
+  x = 1;
+  x = 2;
+}