getwd(3) with NULL pointer extension is supported on NetBSD

[krytarowski]

Summary

The getwd() and getcwd() functions conform to IEEE Std 1003.1-1990
(POSIX.1). The IEEE Std 1003.1-2004 (POSIX.1) revision marked
getwd() as legacy and recommended the use of getcwd() instead. The IEEE
Std 1003.1-2008 (``POSIX.1'') revision removed getwd() from the
specification.

The ability to specify a NULL pointer and have getcwd() allocate memory
as necessary is an extension.

The getwd() function appeared in 4.0BSD.

[krytarowski]

Thank you!

packages/Python/lldbsuite/test/api/multithreaded/common.h

while (count < timeout_seconds) {
         m_condition.wait_for(lock, std::chrono::seconds(1));
       count ++;
     }
     success = false;
     return T();
   }
 };
 
-/// Allocates a char buffer with the current working directory on Linux/Darwin
+/// Allocates a char buffer with the current working directory
 inline char* get_working_dir() {
-#if defined(__APPLE__) || defined(__FreeBSD__)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
     return getwd(0);
 #else
     return get_current_dir_name();
 #endif
 }
 
 #endif // LLDB_TEST_API_COMMON_H