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extern function with definition

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Ben Coman

extern function with definition

Here is something I don't comprehend, a function declared extern but also with its definition provided. Is there anything strange about that arrangement?

extern int sqAskSecurityYesNoQuestion(const char *question)

{

return MessageBoxA(stWindow, question, "Squeak Security Alert", MB_YESNO | MB_ICONSTOP) == IDYES;

}

https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/1d97d795/platforms/win32/vm/sqWin32Window.c#L200

cheers -ben

Nicolas Cellier

Re: extern function with definition

https://jameshfisher.com/2017/08/28/c-extern-function.html

Le sam. 5 janv. 2019 à 08:39, Ben Coman <[hidden email]> a écrit :

Here is something I don't comprehend, a function declared extern but also with its definition provided. Is there anything strange about that arrangement?

extern int sqAskSecurityYesNoQuestion(const char *question)
{
return MessageBoxA(stWindow, question, "Squeak Security Alert", MB_YESNO | MB_ICONSTOP) == IDYES;
}

https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/1d97d795/platforms/win32/vm/sqWin32Window.c#L200

cheers -ben

Ben Coman

Re: extern function with definition

got it, thx Nicolas.

On Sat, 5 Jan 2019 at 18:54, Nicolas Cellier <[hidden email]> wrote:

https://jameshfisher.com/2017/08/28/c-extern-function.html

Le sam. 5 janv. 2019 à 08:39, Ben Coman <[hidden email]> a écrit :

Here is something I don't comprehend, a function declared extern but also with its definition provided. Is there anything strange about that arrangement?

extern int sqAskSecurityYesNoQuestion(const char *question)
{
return MessageBoxA(stWindow, question, "Squeak Security Alert", MB_YESNO | MB_ICONSTOP) == IDYES;
}

https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/1d97d795/platforms/win32/vm/sqWin32Window.c#L200

cheers -ben