Cmake release segmentation fault

[GaaiLam]

When I build the codes with cmake (build type release), a segmentation fault occured, which will disappear when the "release" flag is removed. I tried to locate the codes where the segmentation fault occured but failed. Here is the only modification of the codes:

void KD_TREE::stop_thread(){

    pthread_mutex_lock(&termination_flag_mutex_lock);
    termination_flag = true;
    pthread_mutex_unlock(&termination_flag_mutex_lock);
    printf("0\n");
    if (rebuild_thread) pthread_join(rebuild_thread, NULL);
    printf("1\n");
    pthread_mutex_destroy(&termination_flag_mutex_lock);
    pthread_mutex_destroy(&rebuild_logger_mutex_lock);
    pthread_mutex_destroy(&rebuild_ptr_mutex_lock);
    pthread_mutex_destroy(&points_deleted_rebuild_mutex_lock);
    pthread_mutex_destroy(&working_flag_mutex);
    pthread_mutex_destroy(&search_flag_mutex);     
}

And my CMakeLists.txt:

cmake_minimum_required(VERSION 3.0.2)
project(ikdtree)

add_compile_options(-std=c++17)
set(CMAKE_BUILD_TYPE "Release") // if I remove this line, the segmentation fault will disappear

include_directories(
  include
)

add_executable(ikdtree_demo
  src/ikd_Tree_demo.cpp
  src/ikd_Tree.cpp
)
target_link_libraries(ikdtree_demo pthread)

The output is as follows:

Multi thread started 
0
Rebuild thread terminated normally
terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
[1]    150531 segmentation fault (core dumped)

It seems that the segmentation fault occured in pthread_join(), which makes me confused. Could you please help me to solve the problem?

[GaaiLam]

After following #2 ,the segmentation fault fixed! Thank you!