From 0ec289545a054ee21bac7ded9d474288e43554b7 Mon Sep 17 00:00:00 2001
From: Ilya Grigoriev <ilyagr@users.noreply.github.com>
Date: Thu, 23 Jul 2026 09:58:25 -0700
Subject: [PATCH] configure.ac: don't enable jemalloc if ASAN enabled on macOS,
 error if both enabled

ASAN and jemalloc both replace `malloc` with their version.

Previously, configuring with `--enable-asan` on macOS would enable both
jemalloc and ASAN. I'm not sure which one won, but seemed undesired.
---
 configure.ac | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 53c513acc..549f4a3b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -635,13 +635,20 @@ AC_ARG_ENABLE(
 )
 try_jemalloc=no
 require_jemalloc=no
+if test "x$enable_asan" = xyes && test "x$enable_jemalloc" = xyes; then
+	AC_MSG_ERROR([--enable-asan and --enable-jemalloc cannot be used together])
+fi
 if test "x$enable_jemalloc" = xyes; then
 	try_jemalloc=yes
 elif test "x$enable_jemalloc" = x; then
 	case "$host_os" in
 		*darwin*)
-			try_jemalloc=yes
-			require_jemalloc=yes
+			if test "x$enable_asan" = xyes; then
+				enable_jemalloc=no
+			else
+				try_jemalloc=yes
+				require_jemalloc=yes
+			fi
 			;;
 	esac
 fi