Function pointers casting in C++

Question

I have a void pointer returned by dlsym(), I want to call the function pointed by the void pointer. So I do a type conversion by casting:

void *gptr = dlsym(         


        

Answer 1

Note that C++11 allows such a conversion and from gcc 4.9 and above this conversion does not generate a warning: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57869.

See SO discussions:

• Casts between pointer-to-function and pointer-to-object in C and C++
• Why are function pointers and data pointers incompatible in C/C++?
• can void* be used to store function pointers?
• Using reinterpret_cast to cast a function to void*, why isn't it illegal?