HBOEHM 垃圾回收器未初始化的值错误和泄漏

我正在试验hboehm垃圾收集器，现在只是尝试运行他们的简单示例。问题是，当我使用 Valgrind 检查结果时，我收到很多"使用未初始化值"错误，具有讽刺意味的是，内存泄漏。

重现问题的最小示例的完整项目。

cmake_minimum_required(VERSION 3.10)
# This "outer" CMake file works as a dependency fetcher, and it consists almost exclusively of ExternalProject commands.
# The "inner" CMake file under project/ is a more traditional CMake file. It uses the find_* commands to locate
# dependencies without any knowledge or assumptions about where those dependencies live or how they got there.
include(ExternalProject)
ExternalProject_Add(
libatomic_ops
URL http://www.hboehm.info/gc/gc_source/libatomic_ops-7.6.2.tar.gz
CONFIGURE_COMMAND "" BUILD_COMMAND "" INSTALL_COMMAND ""
)
ExternalProject_Get_Property(libatomic_ops SOURCE_DIR)
set(libatomic_ops_SOURCE_DIR "${SOURCE_DIR}")
ExternalProject_Add(
hboehm_gc
URL http://www.hboehm.info/gc/gc_source/gc-7.6.4.tar.gz
DEPENDS libatomic_ops
BUILD_IN_SOURCE TRUE
# hboehm_gc requires libatomic_ops be placed in a libatomic_ops subdirectory
PATCH_COMMAND "${CMAKE_COMMAND}" -E copy_directory "${libatomic_ops_SOURCE_DIR}" "<SOURCE_DIR>/libatomic_ops"
CONFIGURE_COMMAND ./configure "--prefix=<INSTALL_DIR>"
BUILD_COMMAND make
INSTALL_COMMAND make install
)
ExternalProject_Get_Property(hboehm_gc INSTALL_DIR)
set(hboehm_gc_INSTALL_DIR "${INSTALL_DIR}")
# Now that we have our dependencies on disk to be found, it's safe to configure (run cmake on) the real project
ExternalProject_Add(
main DEPENDS hboehm_gc
DOWNLOAD_COMMAND ""
SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/project"
BUILD_ALWAYS TRUE
CMAKE_ARGS "-DCMAKE_PREFIX_PATH=${hboehm_gc_INSTALL_DIR}"
INSTALL_COMMAND ""
TEST_COMMAND "${CMAKE_CTEST_COMMAND}" --verbose
)

cmake_minimum_required(VERSION 3.10)
find_path(HBOEHM_GC_INSTALL_DIR include/gc.h)
find_program(VALGRIND_COMMAND valgrind)
add_executable(main src/main.cpp)
target_compile_features(main PRIVATE cxx_std_14)
target_link_libraries(main PRIVATE "${HBOEHM_GC_INSTALL_DIR}/lib/libgc.a" pthread)
target_include_directories(main PRIVATE "${HBOEHM_GC_INSTALL_DIR}/include")
enable_testing()
add_test(NAME valgrind COMMAND "${VALGRIND_COMMAND}" "$<TARGET_FILE:main>")
set_tests_properties(
valgrind PROPERTIES
PASS_REGULAR_EXPRESSION "ERROR SUMMARY: 0 errors from 0 contexts"
)

#include <cassert>
#include <iostream>
#include <gc.h>
int main() {
int i;
GC_INIT();    /* Optional on Linux/X86; see below.  */
for (i = 0; i < 10000000; ++i)
{
int **p = (int **) GC_MALLOC(sizeof(int *));
int *q = (int *) GC_MALLOC_ATOMIC(sizeof(int));
assert(*p == 0);
*p = (int *) GC_REALLOC(q, 2 * sizeof(int));
if (i % 100000 == 0)
std::cout << "Heap size = " << GC_get_heap_size() << "n";
}
return 0;
}

只需要：

mkdir build
cd build
cmake ..
make

它将下载hboehm_gc和依赖项，构建项目并运行 valgrind。我希望我只是以某种方式滥用了图书馆，但我不确定我做错了什么。任何帮助，不胜感激。