[compiler-rt] [ASan] Disable test that sets call stack on Darwin (PR #170786)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/170786

This test fails with the internal shell as we implement ulimit with a python wrapper. This python wrapper fails on recent versions of MacOS to set the stack size limit lower, or even to the current values. More discussion is in https://github.com/python/cpython/issues/78783 towards the bottom (it seems like a new issue should be opened).

It does not seem like we lose significant test coverage by disabling this on MacOS as the test running on Linux should catch any major regressions. We can also simply reenable once the issue is fixed (although writing a simple c program with calls setrlimit directly also fails in the smae manner).

>From 23575880cb0cda362fba1881c430c534552d2e3c Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Thu, 4 Dec 2025 16:49:42 -0800
Subject: [PATCH] [ASan] Disable test that sets call stack on Darwin

This test fails with the internal shell as we implement ulimit with a
python wrapper. This python wrapper fails on recent versions of MacOS
to set the stack size limit lower, or even to the current values.
More discussion is in https://github.com/python/cpython/issues/78783
towards the bottom (it seems like a new issue should be opened).

It does not seem like we lose significant test coverage by disabling
this on MacOS as the test running on Linux should catch any major
regressions. We can also simply reenable once the issue is fixed
(although writing a simple c program with calls setrlimit directly
also fails in the smae manner).
---
 compiler-rt/test/asan/TestCases/Posix/deep_call_stack.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler-rt/test/asan/TestCases/Posix/deep_call_stack.cpp b/compiler-rt/test/asan/TestCases/Posix/deep_call_stack.cpp
index 1342eae927794..c4e519fa61830 100644
--- a/compiler-rt/test/asan/TestCases/Posix/deep_call_stack.cpp
+++ b/compiler-rt/test/asan/TestCases/Posix/deep_call_stack.cpp
@@ -1,5 +1,9 @@
 // Check that UAR mode can handle very deep recursion.
 // REQUIRES: shell
+// TODO(boomanaiden154): This test currently fails with the internal
+// shell because python is not able to set RLIMIT_STACK. We should
+// reenable this when the behavior is fixed.
+// UNSUPPORTED: system-darwin
 // RUN: %clangxx_asan -O2 %s -o %t
 // RUN: ulimit -s 4096
 // RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t 2>&1 | FileCheck %s