我正在运行一个c库，它动态分配内存并从h5文件加载一个字符串数组。
我在使用后释放内存时出错，我不确定这是Windows的问题还是我没有做正确的事情。
对于Windows，我使用Visual Studio C编译器（2019），hdf5库的版本是1.12

{
    unsigned mode        = H5F_ACC_RDONLY;
    char     file_name[] = "d1.h5";

    // assume a priori knowledge of dataset name and size
    char dset_name[] = "/group_name/daset_name";
    char**  elts = calloc(10, sizeof(char*));

    hid_t file = H5Fopen(file_name, mode, H5P_DEFAULT));
    hid_t dset = H5Dopen2(file, dset_name, H5P_DEFAULT);
    hid_t h5_type = H5Tcopy(H5T_C_S1);
    herr_t ret = H5Tset_size(h5_type, H5T_VARIABLE);

    // read all dataset elements
    H5Dread(dset, h5_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, elts);

    H5Tclose(dset);
    H5Dclose(dset);
    H5Fclose(file);

    // elts would be something like
    //    "asdf"
    //    "asdff"
    //    "asdfwer"
    //    "asdfffasdf"
    //    "asd"
    //    "asdf"
    //    "asdff"
    //    "asdfwer"
    //    "asdfffasdf"
    //    "asd"

    // do something w/ the dataset elements

    // after working free memory
    for(size_t i = 0; i < 10; i++) {
        free(elts[i]); // fails on this line
    }
    free(elts); // this line does not fail

}

此代码仅在调试模式下的Windows上失败，在发布时它可以工作。程序退出，错误为：

minkernel\crts\ucrt\src\appcrt\heap\debug_heap.cpp(908): Assertion failed: is_block_type_valid(header->_block_use)
unknown file: error: SEH exception with code 0xc0000005 thrown in the test body