Patch for jemalloc 3.6.0 to allow it to work with newer versions of glibc

jemalloc_initial_exec.patch

diff -ruN jemalloc-3.6.0-pristine/configure jemalloc-3.6.0-patched/configure
--- jemalloc-3.6.0-pristine/configure	2014-03-31 09:38:51.000000000 -0700
+++ jemalloc-3.6.0-patched/configure	2025-04-07 16:03:09.996708990 -0700
@@ -5079,7 +5079,7 @@
 main ()
 {
 static __thread int
-               __attribute__((tls_model("initial-exec"))) foo;
+               __attribute__((tls_model("initial-exec"), unused)) foo;
                foo = 0;
   ;
   return 0;
diff -ruN jemalloc-3.6.0-pristine/configure.ac jemalloc-3.6.0-patched/configure.ac
--- jemalloc-3.6.0-pristine/configure.ac	2014-03-31 09:37:49.000000000 -0700
+++ jemalloc-3.6.0-patched/configure.ac	2025-04-07 16:03:17.274716777 -0700
@@ -387,7 +387,7 @@
 JE_CFLAGS_APPEND([-Werror])
 JE_COMPILABLE([tls_model attribute], [],
               [static __thread int
-               __attribute__((tls_model("initial-exec"))) foo;
+               __attribute__((tls_model("initial-exec"), unused)) foo;
                foo = 0;],
               [je_cv_tls_model])
 CFLAGS="${SAVED_CFLAGS}"

This is based on GafferHQ/dependencies#263 which is in turn based on jemalloc/jemalloc#124. This was helpful for getting jemalloc 3.6.0 working with newer versions of Ubuntu, at least when used via LD_PRELOAD.

Apply like so:

patch -p1 < jemalloc_initial_exec.patch

The p1 removes the initial directory.

This patches both the configure script and configure.ac, so that if you use autogen.sh the changes will be reflected, and if you use the bundled configure script from the source tarball, that will also work.