From ae4d87118317d246ed98ba7f840af7054d15db4d Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Sun, 10 Jul 2022 15:19:55 +0200
Subject: [PATCH] AK: Port StackInfo to FreeBSD

This can almost be identical to the Linux version, except that the
`pthread_attr_t` object is populated using a call to
`pthread_attr_get_np` instead of `pthread_getattr_np`.

FreeBSD also needs `pthread_atttr_t` to be initialized using
`pthread_attr_init` instead of zero-initialization, but it's the
technically correct thing to do on Linux as well.
---
 AK/StackInfo.cpp | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/AK/StackInfo.cpp b/AK/StackInfo.cpp
index 07b791d816e..4f53947881a 100644
--- a/AK/StackInfo.cpp
+++ b/AK/StackInfo.cpp
@@ -14,6 +14,9 @@
 #    include <serenity.h>
 #elif defined(__linux__) or defined(AK_OS_MACOS)
 #    include <pthread.h>
+#elif defined(__FreeBSD__)
+#    include <pthread.h>
+#    include <pthread_np.h>
 #endif
 
 namespace AK {
@@ -25,13 +28,23 @@ StackInfo::StackInfo()
         perror("get_stack_bounds");
         VERIFY_NOT_REACHED();
     }
-#elif defined(__linux__)
+#elif defined(__linux__) or defined(__FreeBSD__)
     int rc;
-    pthread_attr_t attr = {};
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+
+#    ifdef __linux__
     if ((rc = pthread_getattr_np(pthread_self(), &attr)) != 0) {
         fprintf(stderr, "pthread_getattr_np: %s\n", strerror(rc));
         VERIFY_NOT_REACHED();
     }
+#    else
+    if ((rc = pthread_attr_get_np(pthread_self(), &attr)) != 0) {
+        fprintf(stderr, "pthread_attr_get_np: %s\n", strerror(rc));
+        VERIFY_NOT_REACHED();
+    }
+#    endif
+
     if ((rc = pthread_attr_getstack(&attr, (void**)&m_base, &m_size)) != 0) {
         fprintf(stderr, "pthread_attr_getstack: %s\n", strerror(rc));
         VERIFY_NOT_REACHED();