Program compiles in release build but not debug

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Hi All, I'm having problems building a legacy C++ program in VS 2015, it builds without errors in Release but not in Debug, the line it baulks at it this

C++

gets_s( ch );

gets_s too few arguments for call

Why does it build in Release is my question

What I have tried:

Hi All, I'm having problems building a legacy C++ program in VS 2015, it builds without errors in Release but not in Debug, the line it baulks at it this


<pre lang="c++">
gets_s( ch );

gets_s too few arguments for call

Why does it build in Release is my question

Posted 7-Feb-18 5:10am

pkfox

Updated 7-Feb-18 5:41am

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Jochen Arndt · Answer 1 · 2018-02-07T05:32:00

This is probably sourced by the template overload of the gets_s() function which might behave differently with debug builds.

I tried this with VS 2017 and it compiles fine in debug mode:

char ch[10];
gets_s(ch);

So it might be of interest how your ch variable is declared.

To avoid the error you can pass the size explicitly:

char ch[10];
gets_s(ch, sizeof(ch));