--- a/llvm/lib/Support/Unix/Program.inc	2023-04-28 21:51:01.000000000 +0200
+++ b/llvm/lib/Support/Unix/Program.inc	2024-07-02 11:12:41.645169000 +0200
@@ -54,10 +54,8 @@
 #define USE_NSGETENVIRON 0
 #endif
 
-#if !USE_NSGETENVIRON
+#if USE_NSGETENVIRON
 extern char **environ;
-#else
-#include <crt_externs.h> // _NSGetEnviron
 #endif
 #endif
 
@@ -238,14 +236,6 @@
       }
     }
 
-    if (!Envp)
-#if !USE_NSGETENVIRON
-      Envp = const_cast<const char **>(environ);
-#else
-      // environ is missing in dylibs.
-      Envp = const_cast<const char **>(*_NSGetEnviron());
-#endif
-
     constexpr int maxRetries = 8;
     int retries = 0;
     pid_t PID;
@@ -312,11 +302,7 @@
 
     // Execute!
     std::string PathStr = std::string(Program);
-    if (Envp != nullptr)
-      execve(PathStr.c_str(), const_cast<char **>(Argv),
-             const_cast<char **>(Envp));
-    else
-      execv(PathStr.c_str(), const_cast<char **>(Argv));
+    execv(PathStr.c_str(), const_cast<char **>(Argv));
     // If the execve() failed, we should exit. Follow Unix protocol and
     // return 127 if the executable was not found, and 126 otherwise.
     // Use _exit rather than exit so that atexit functions and static