From 5d4017de4f6c3bed2dba80ddbcf1089041f5a08d Mon Sep 17 00:00:00 2001
From: Marcus Holland-Moritz <github@mhxnet.de>
Date: Sun, 14 Apr 2024 16:16:52 +0200
Subject: [PATCH] fix: mallctl("version", ...) crashes on macOS

---
 src/dwarfs/library_dependencies.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/dwarfs/library_dependencies.cpp b/src/dwarfs/library_dependencies.cpp
index 3f16a91e..7fcd78c0 100644
--- a/src/dwarfs/library_dependencies.cpp
+++ b/src/dwarfs/library_dependencies.cpp
@@ -53,9 +53,13 @@ std::string version_to_string(uint64_t version, version_format fmt) {
 
 #ifdef DWARFS_USE_JEMALLOC
 std::string get_jemalloc_version() {
-  const char* j;
+  char const* j;
+#ifdef __APPLE__
+  j = JEMALLOC_VERSION;
+#else
   size_t s = sizeof(j);
   ::mallctl("version", &j, &s, nullptr, 0);
+#endif
   std::string rv{j};
   if (auto pos = rv.find('-'); pos != std::string::npos) {
     rv.erase(pos, std::string::npos);