pthread giving error: invalid conversion from ‘void* (*)(int*)’ to ‘void* (*)(void*)’

knobby67 · 05-05-2017, 06:43 AM

Hi All,
I just went to update some old code using pthreads and get the above error.The code did work in the past. I call the thread with

Code:

pthread_create( &Test_Thread, NULL, &TestMovement, ( void * )amount );

and the function is

Code:

void *TestMovement( void *data )

can anyone advise on what I'm doing wrong please?

ntubski · 05-05-2017, 07:20 AM

Quote:

can anyone advise on what I'm doing wrong please?

I'll guess the declaration is wrong/in the wrong place.

rtmistler · 05-05-2017, 07:25 AM

No expert on it, I've used them and each time I do so, I look it up somewhere. This example seems very fundamental and there do seem to be some minor differences between their example and the minor amount of code you've shown.

http://timmurphy.org/2010/05/04/pthr...rking-example/

Suggest if you still have difficulties, that you post enough additional code so that we can see how you've declared Test_Thread and how you've coded TestMovement.

knobby67 · 05-05-2017, 07:53 AM

Thanks that link demo fixed it, now what's even odder is some other threads in the same file are declared in exactly the same way ( my original way ) and they work...

NevemTeve · 05-05-2017, 10:54 AM

There might be somewhere a declaration of 'TestMovement' that has 'int *' parameter instead of 'void *'