[compiler-rt] [RTSan] Fix tests under Internal Shell (PR #168470)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/168470

This patch fixes the only RTSan test that was broken by enabling lit's internal shell on Darwin. This patch rewrites the test to prefix env variables with `env` and to avoid the use of subshells.

>From 16d387ee0726bbf7a0151ddeb03ec7077bfeb25c Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Mon, 17 Nov 2025 17:51:10 -0800
Subject: [PATCH] [RTSan] Fix tests under Internal Shell

This patch fixes the only RTSan test that was broken by enabling lit's internal
shell on Darwin. This patch rewrites the test to prefix env variables with `env`
and to avoid the use of subshells.
---
 compiler-rt/test/rtsan/Darwin/dlopen.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/compiler-rt/test/rtsan/Darwin/dlopen.cpp b/compiler-rt/test/rtsan/Darwin/dlopen.cpp
index 1aabe5cb6e580..435a4353b7026 100644
--- a/compiler-rt/test/rtsan/Darwin/dlopen.cpp
+++ b/compiler-rt/test/rtsan/Darwin/dlopen.cpp
@@ -8,18 +8,19 @@
 // RUN: %clangxx -fsanitize=realtime %s -o %t.so -shared -DSHARED_LIB
 // RUN: %clangxx %s -o %t
 
-// RUN: RTSAN_DYLIB_PATH=`%clangxx -fsanitize=realtime %s -### 2>&1 \
+// RUN: %clangxx -fsanitize=realtime %s -### 2>&1 \
 // RUN:   | grep "libclang_rt.rtsan_osx_dynamic.dylib" \
-// RUN:   | sed -e 's/.*"\(.*libclang_rt.rtsan_osx_dynamic.dylib\)".*/\1/'`
+// RUN:   | sed -e 's/.*"\(.*libclang_rt.rtsan_osx_dynamic.dylib\)".*/\1/' \
+// RUN:   | tr -d '\n' > %t.rtsan_dylib_path
 
 // Launching a non-instrumented binary that dlopen's an instrumented library should fail.
 // RUN: not %run %t %t.so 2>&1 | FileCheck %s --check-prefix=CHECK-FAIL
 // Launching a non-instrumented binary with an explicit DYLD_INSERT_LIBRARIES should work.
-// RUN: DYLD_INSERT_LIBRARIES=$RTSAN_DYLIB_PATH %run %t %t.so 2>&1 | FileCheck %s
+// RUN: env DYLD_INSERT_LIBRARIES="%{readfile:%t.rtsan_dylib_path}" %run %t %t.so 2>&1 | FileCheck %s
 
 // Launching an instrumented binary with the DYLD_INSERT_LIBRARIES env variable has no error
 // RUN: %clangxx -fsanitize=realtime %s -o %t
-// RUN: DYLD_INSERT_LIBRARIES=$RTSAN_DYLIB_PATH %run %t %t.so 2>&1 | FileCheck %s --check-prefix=CHECK-INSTRUMENTED
+// RUN: env DYLD_INSERT_LIBRARIES="%{readfile:%t.rtsan_dylib_path}" %run %t %t.so 2>&1 | FileCheck %s --check-prefix=CHECK-INSTRUMENTED
 
 #include <dlfcn.h>
 #include <stdio.h>