Question

I am a C programmer (on linux), but now I have a project on C++, and have a question.

Here is sample code

g_action.sa_sigaction = (void(*)(int,siginfo_t*,void*))&FlashWork::Disconnect_action; 

When I try to compile this on x86, it works fine, but on arm I get the following error

error: converting from void (FlashWork::*)(int, siginfo_t*, void*) to void (*)(int, siginfo_t*, void*)

What am I doing wrong?

Answer 1

“Pointer to members” are not compatible with “pointers to functions”, unless it’s a static member. The reason is that a pointer to member needs an object (a FlashWork object) in your case.