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digitalmars.D.learn - safe console input?

reply XavierAP <n3minis-git yahoo.es> writes:
I was surprised by a compiler message saying that 
std.stdio.readln() (and specifically the overload without 
arguments) is not safe but  system.

Actually I was using it only to pause execution until the user 
presses Enter. So how else could I do this within a  safe 
environment?

And more generally, is it possible to get user console input in a 
 safe way?
Mar 09
parent reply Adam D. Ruppe <destructionator gmail.com> writes:
On Thursday, 9 March 2017 at 22:53:59 UTC, XavierAP wrote:
 And more generally, is it possible to get user console input in 
 a  safe way?
Just wrap it in a trusted function.
Mar 09
parent reply XavierAP <n3minis-git yahoo.es> writes:
On Thursday, 9 March 2017 at 23:55:35 UTC, Adam D. Ruppe wrote:
 Just wrap it in a  trusted function.
I knew this answer already of course ;) but I take it as implying that there is no other way. Actually I really wonder why std.stdio.readln() itself is not flagged trusted. I wouldn't think such a function skips any buffer bounds checking, even in -release -- having to wait for user input anyway performance is no issue.
Mar 09
parent Jack Stouffer <jack jackstouffer.com> writes:
On Friday, 10 March 2017 at 00:42:35 UTC, XavierAP wrote:
 On Thursday, 9 March 2017 at 23:55:35 UTC, Adam D. Ruppe wrote:
 Just wrap it in a  trusted function.
I knew this answer already of course ;) but I take it as implying that there is no other way. Actually I really wonder why std.stdio.readln() itself is not flagged trusted. I wouldn't think such a function skips any buffer bounds checking, even in -release -- having to wait for user input anyway performance is no issue.
Its use of __gshared. Making it shared is non trivial.
Mar 09