error: invalid conversion from ‘void*’ to ‘void* (*)(void*)’ - pthreads

Question

anisha@linux-y3pi:~> g++ conditionVarTEST.cpp -Wall

conditionVarTEST.cpp: In function ‘int main()’:
conditionVarTEST.cpp:33:53: error: invalid conversion from ‘void*         


        

Answer 1

If you look at the manual page you will see that the function argument is

void *(*start_routine) (void *)

That is, a pointer to a function which takes one void * argument and returns void *.

To get rid of your errors, change your function to return void *, and pass it without type-casting it. The return from the thread function can be a simple return NULL if you don't care about the value.