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    typedef int (*streamSize_t)(char *,tePddLocation);
    typedef int (*read_datastream_t)(char *,unsigned char*, int, unsigned int, unsigned char*);
    typedef int (*get_elementfromstream_t)(char *, const void*, size_t, void*, int, unsigned char);
    streamSize_t streamSize;
    read_datastream_t read_datastream;
    get_elementfromstream_t get_elementfromstream;
    char *error;
    handle = dlopen ("/opt/bosch/base/lib/libpdd_so.so", RTLD_LAZY);//  ./libpdd_so1.so
    std::cout<<"Address"<<handle<<std::endl;
        if (!handle) {
            std::cout<<"error to open"<<dlerror()<<std::endl;
            exit(1);
        }
    streamSize = reinterpret_cast<streamSize_t>(dlsym(handle,"pdd_get_data_stream_size"));
    int val = streamSize("EarlyConfigTwoDisplays",a);
    unsigned char *ptr = (unsigned char*)malloc(val);
    memset(ptr,0x00,val);
    unsigned char *ptr1 = (unsigned char*)malloc(val);
    memset(ptr1,0x00,val);
    unsigned char *ptr3 = (unsigned char*)malloc(32);
    memset(ptr3,0x00,32);

   std::cout<<"size"<<val<<std::endl;
   read_datastream = reinterpret_cast<read_datastream_t>(dlsym(handle,"pdd_read_datastream_early_from_emmc"));
   int return_read_datastream = read_datastream("EarlyConfigTwoDisplays",ptr,val,0x01,ptr1);
   get_elementfromstream = reinterpret_cast<get_elementfromstream_t>(dlsym(handle,"pdd_helper_get_element_from_stream"));
   int return_getelementfromstream = get_elementfromstream("TrTimingLVDS2",ptr,val,(void*)ptr3,32,0);
   std::cout<<return_read_datastream<<" "<<return_getelementfromstream<<" "<<ptr3<<" "<<ptr1<<std::endl;
Alan Birtles
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M N Adarsh Kumar
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    I don't really see a question here. Is there a specific line of code that is producing an error message? – jkb Jun 20 '22 at 03:56
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    The type of `"EarlyConfigTwoDisplays"` is `const char[k]` for some value `k` (I'm too lazy to count characters). Note `const`. This is convertible to `const char*`. For backward compatibility, some compilers allow an implicit conversion to `char*` (no `const`), but this is an extension to the C++ standard; the standard doesn't allow it. Your program passes a string literal to a function expecting `char*`, hence the warning. Note that, in any case, the memory occupied by a string literal is not writable. If `streamSize` expects to write to it, it's going to have a bad time. – Igor Tandetnik Jun 20 '22 at 03:56
  • @jkb read_datastream("EarlyConfigTwoDisplays",ptr,val,0x01,ptr1) here ptr1 is showing warning – M N Adarsh Kumar Jun 20 '22 at 03:58

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