[parallel] Fix element_type deduction in minmax algorithms #999

	# Copyright (c) 2026 Surya Teja
	#
	# SPDX-License-Identifier: BSL-1.0
	# Distributed under the Boost Software License, Version 1.0. (See accompanying
	# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

	name: Linux CI (Release, GCC Trunk Reflection)

	on: [pull_request]

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest
	container: stellargroup/gcc_trunk_build_env:1

	steps:
	- uses: actions/checkout@v6
	- name: Configure
	shell: bash
	run: \|
	cmake \
	. \
	-Bbuild \
	-GNinja \
	-DHPX_WITH_MALLOC=system \
	-DCMAKE_BUILD_TYPE=Debug \
	-DHPX_WITH_CXX_STANDARD=26 \
	-DCMAKE_C_COMPILER=gcc \
	-DCMAKE_CXX_COMPILER=g++ \
	-DCMAKE_CXX_FLAGS="-freflection -std=c++26 -latomic" \
	-DCMAKE_EXE_LINKER_FLAGS="-latomic" \
	-DCMAKE_SHARED_LINKER_FLAGS="-latomic" \
	-DCMAKE_REQUIRED_LIBRARIES="atomic" \
	-DHPX_INTERNAL_CACHE_LINE_SIZE_DETECT=64 \
	-DHPX_WITH_FETCH_ASIO=ON \
	-DHPX_WITH_EXAMPLES=OFF \
	-DHPX_WITH_TESTS=ON \
	-DHPX_WITH_TESTS_MAX_THREADS_PER_LOCALITY=2 \
	-DHPX_SERIALIZATION_WITH_ALLOW_AUTO_GENERATE=ON \
	-DHPX_WITH_CHECK_MODULE_DEPENDENCIES=On
	- name: Build
	shell: bash
	run: \|
	cmake --build build --target all
	cmake --build build --target tests.unit.modules.serialization
	- name: Test
	shell: bash
	run: \|
	cd build
	ctest \
	--output-on-failure \
	--tests-regex "tests.unit.modules.serialization"

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