• RazvanN (28/28) May 04 2020 truct K
• Simen =?UTF-8?B?S2rDpnLDpXM=?= (10/38) May 04 2020 Surely the above code, which silently discards the exception,
• RazvanN (3/14) May 05 2020 Ah sorry! I was on a branch were I had some other modifications.

RazvanN <razvan.nitu1305 gmail.com> writes:

truct K
{
     ~this() nothrow {}
}

void main()
{
     static class C
     {
         this(K, int) {}
     }

     static int foo(bool flag)
     {
         if (flag)
             throw new Exception("hello");
         return 1;
     }

     try
     {
         new C(K(), foo(true));
     }
     catch(Exception)
     {
     }
}

Result:

object.Exception test.d(18): hello

If the destructor of K is not marked nothrow the code does not 
throw an exception. Is this a bug or am I missing something?

Simen =?UTF-8?B?S2rDpnLDpXM=?= <simen.kjaras gmail.com> writes:

On Tuesday, 5 May 2020 at 04:02:06 UTC, RazvanN wrote:
 truct K
 {
     ~this() nothrow {}
 }

 void main()
 {
     static class C
     {
         this(K, int) {}
     }

     static int foo(bool flag)
     {
         if (flag)
             throw new Exception("hello");
         return 1;
     }

     try
     {
         new C(K(), foo(true));
     }
     catch(Exception)
     {
     }
 }

 Result:

 object.Exception test.d(18): hello

 If the destructor of K is not marked nothrow the code does not 
 throw an exception. Is this a bug or am I missing something?

Surely the above code, which silently discards the exception, 
does not print "hello"?

Regardless, I ran your code with writeln inside the catch(), and 
without the try-catch entirely, with and without nothrow on K's 
destructor. I am unable to replicate the issue on my computer 
with DMD 2.091.0, as well as on run.dlang.io. Is something 
missing in your code here?

--
   Simen

RazvanN <razvan.nitu1305 gmail.com> writes:

On Tuesday, 5 May 2020 at 05:37:08 UTC, Simen Kjærås wrote:
 On Tuesday, 5 May 2020 at 04:02:06 UTC, RazvanN wrote:
 [...]

 Surely the above code, which silently discards the exception, 
 does not print "hello"?

 Regardless, I ran your code with writeln inside the catch(), 
 and without the try-catch entirely, with and without nothrow on 
 K's destructor. I am unable to replicate the issue on my 
 computer with DMD 2.091.0, as well as on run.dlang.io. Is 
 something missing in your code here?

 --
   Simen

Ah sorry! I was on a branch were I had some other modifications. 
Indeed in git master the issue does not manifest.