[clang] Thread Safety Analysis: Add more complex cleanup attribute test (PR #179049)

[Marco Elver via cfe-commits]

https://github.com/melver created https://github.com/llvm/llvm-project/pull/179049

Test that cleanup attribute is handled correctly in the presence of a unary operator before scope end.

NFC.

>From c3a5f4ac4e029340ced62245e1451fb23735afc6 Mon Sep 17 00:00:00 2001
From: Marco Elver <elver at google.com>
Date: Sat, 31 Jan 2026 16:43:57 +0100
Subject: [PATCH] Thread Safety Analysis: Add more complex cleanup attribute
 test

Test that cleanup attribute is handled correctly in the presence of a
unary operator before scope end.

NFC.
---
 clang/test/Sema/warn-thread-safety-analysis.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/clang/test/Sema/warn-thread-safety-analysis.c b/clang/test/Sema/warn-thread-safety-analysis.c
index 53594609e902d..69ec109e1523c 100644
--- a/clang/test/Sema/warn-thread-safety-analysis.c
+++ b/clang/test/Sema/warn-thread-safety-analysis.c
@@ -192,6 +192,12 @@ int main(void) {
     struct Mutex* const __attribute__((unused, cleanup(unlock_scope))) scope = &mu1;
     mutex_exclusive_lock(&mu1);  // With basic alias analysis lock through mu1 also works.
   }
+  {
+    int i = 0;
+    mutex_exclusive_lock(&mu1);
+    struct Mutex* const __attribute__((unused, cleanup(unlock_scope))) scope = &mu1;
+    i++;
+  }
   // Cleanup through cast alias pointer in a for-loop; a variant of this pattern
   // appears in the Linux kernel for generic scoped guard macros.
   for (int i = (mutex_exclusive_lock(foo_.mu_), 0),