Thread overview
use format int unittest
Mar 18
okeyes
Apr 15
okeyes
March 18
visual studio 2013,visuald0.44.1 dmd2.073.2

code like this

import std.stdio;
import std.string;

int main(string[] argv)
{
    writeln("Hello D-World!");
    return 0;
}

unittest
{
	string str=format("test format %d",1);
	writeln(str);
}


when debugger ,getting wrong.

when change Debugger"Mago" to "Visual Studio",is OK
March 19

On 18.03.2017 14:54, okeyes wrote:
> visual studio 2013,visuald0.44.1 dmd2.073.2
>
> code like this
>
> import std.stdio;
> import std.string;
>
> int main(string[] argv)
> {
>     writeln("Hello D-World!");
>     return 0;
> }
>
> unittest
> {
>     string str=format("test format %d",1);
>     writeln(str);
> }
>
>
> when debugger ,getting wrong.
>
> when change Debugger"Mago" to "Visual Studio",is OK

I guess what you are seeing is a program stop at an Exception in std.format that is expected to be thrown by std.format unittests. These are compiled into your executable due to the way they are defined as part of a template.

The simplest workaround is to sigh and press "Continue".

Alternatively, you can disable stopping on exceptions when they are thrown (unhandled exceptions will still be shown). For Mago, that is done by unchecking "D Exceptions" in the Exceptions window (Ctrl+Alt+E). The Visual Studio debugger treats it as a "Win32 Exception", uncheck "D Exception" below that entry. The downside is that the debugger will also not break for exceptions that you want to debug.
April 15
On Saturday, 18 March 2017 at 13:54:22 UTC, okeyes wrote:
> visual studio 2013,visuald0.44.1 dmd2.073.2
>
> code like this
>
> import std.stdio;
> import std.string;
>
> int main(string[] argv)
> {
>     writeln("Hello D-World!");
>     return 0;
> }
>
> unittest
> {
> 	string str=format("test format %d",1);
> 	writeln(str);
> }
>
>
> when debugger ,getting wrong.
>
> when change Debugger"Mago" to "Visual Studio",is OK


int main(string[] argv)
{
    writeln("Hello D-World!");
    string str=format("test format %d",1);
    return 0;
}


unittest
{
}

get this err.

First-chance exception: D Exception Unterminated format specifier: "%" at C:\D\dmd2\windows\bin\..\..\src\phobos\std\format.d(1103)

using format and using unittest.
April 15

On 15.04.2017 09:28, okeyes wrote:
> On Saturday, 18 March 2017 at 13:54:22 UTC, okeyes wrote:
>> visual studio 2013,visuald0.44.1 dmd2.073.2
>>
>> code like this
>>
>> import std.stdio;
>> import std.string;
>>
>> int main(string[] argv)
>> {
>>     writeln("Hello D-World!");
>>     return 0;
>> }
>>
>> unittest
>> {
>>     string str=format("test format %d",1);
>>     writeln(str);
>> }
>>
>>
>> when debugger ,getting wrong.
>>
>> when change Debugger"Mago" to "Visual Studio",is OK
>
>
> int main(string[] argv)
> {
>     writeln("Hello D-World!");
>     string str=format("test format %d",1);
>     return 0;
> }
>
>
> unittest
> {
> }
>
> get this err.
>
> First-chance exception: D Exception Unterminated format specifier: "%"
> at C:\D\dmd2\windows\bin\..\..\src\phobos\std\format.d(1103)
>
> using format and using unittest.

That's the same issue, it doesn't matter where std.format is instantiated. Being a template its unittests are still compiled in.