jemalloc: 5.3.0 -> 5.3.0-unstable-2025-09-12

stdenv.mkDerivation rec {

  pname = "jemalloc";

  version = "5.3.0";

  version = "5.3.0-unstable-2025-09-12";

  src = fetchFromGitHub {

    owner = "jemalloc";

    owner = "facebook";

    repo = "jemalloc";

    tag = version;

    hash = "sha256-bb0OhZVXyvN+hf9BpPSykn5cGm87a0C+Y/iXKt9wTSs=";

    rev = "c0889acb6c286c837530fdbeb96007b0dee8b776";

    hash = "sha256-lBNgvUhuiRPgzr8JC4zSSCT2KpDBktBVX72zfvAEHvo=";

  };

  patches = [

    # fix tests under --with-jemalloc-prefix=, see https://github.com/jemalloc/jemalloc/pull/2340

    (fetchpatch {

      url = "https://github.com/jemalloc/jemalloc/commit/d00ecee6a8dfa90afcb1bbc0858985c17bef6559.patch";

      hash = "sha256-N5i4IxGJ4SSAgFiq5oGRnrNeegdk2flw9Sh2mP0yl4c=";

    })

    # fix linking with libc++, can be removed in the next update (after 5.3.0).

    # https://github.com/jemalloc/jemalloc/pull/2348

    (fetchpatch {

      url = "https://github.com/jemalloc/jemalloc/commit/4422f88d17404944a312825a1aec96cd9dc6c165.patch";

      hash = "sha256-dunkE7XHzltn5bOb/rSHqzpRniAFuGubBStJeCxh0xo=";

    })

    # -O3 appears to introduce an unreproducibility where

    # `rtree_read.constprop.0` shows up in some builds but

    # not others, so we fall back to O2:

  configureScript = "./autogen.sh";

  configureFlags = [

    "--with-version=${version}-0-g0000000000000000000000000000000000000000"

    "--with-version=${lib.versions.majorMinor version}.0-0-g${src.rev}"

    "--with-lg-vaddr=${with stdenv.hostPlatform; toString (if isILP32 then 32 else parsed.cpu.bits)}"

  ]

  # see the comment on stripPrefix