[openssl-users] Return type of SSL_ctrl

Ludwig, Mark ludwig.mark at siemens.com
Wed Nov 30 17:38:46 UTC 2016

> From: Salz, Rich, Wednesday, November 30, 2016 9:38 AM
> > We're moving up to OpenSSL 1.0.2j from OpenSSL 0.9.8<something>, and
> > noticed that the SSL functions based on SSL_ctrl() changed from returning
> > type int to returning type long.
> The "proper" answer is to not use long, but rather sized types, which we are
> slowly moving toward.

Funny you should mention this, because this topic arose
internally after someone decided to change the return type
of SSL_ctrl() to intprt_t.  I have no idea why, since as far
as I can tell, all of the return values would fit in a
32-bit integer; thus my question about why it was changed to
long, which is either 32 bits or 64 bits, depending on
platform.  I suspect it was the use of long that tricked someone 
into thinking it might be holding a pointer, and thus led to the 
change to intptr_t, so it would fit on Windows.  (Blind/stupid
global replacement.)

(Does OpenSSL support any platform in which type int is 16 bits?)


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