• eles (39/39) Oct 14 2014 Hello,
• Adam D. Ruppe (8/9) Oct 14 2014 That was just a speculative thread, that stuff isn't implemented.
• eles (2/6) Oct 14 2014 Thank you.
• ketmar via Digitalmars-d-learn (5/6) Oct 14 2014 currently betterC disables module info generation and some module

"eles" <eles eles.com> writes:

Hello,

According to this:

http://forum.dlang.org/post/lddug4$jgv$1 digitalmars.com

"-betterC" should disable support for exception handling. So I 
expected dmd to reject the following code:

===============================================
import std.stdio;

int readDieFromFile()
{
     auto file = File("the_file_that_contains_the_value", "r");

     int die;
     file.readf(" %s", &die);

     return die;
}

int tryReadingFromFile()
{
     int die;

     try {
         die = readDieFromFile();

     } catch (std.exception.ErrnoException exc) {
         writeln("(Could not read from file; assuming 1)");
         die = 1;
     }

     return die;
}

void main()
{
     const int die = tryReadingFromFile();

     writeln("Die value: ", die);
}
=======================================================
(from Ali's book; thanks once again)

But it compiles and runs fine:

$dmd betterC.d -betterC

$./betterC
(Could not read from file; assuming 1)
Die value: 1

This is with dmd 2.066 on Linux x86_64.

What code would fail under -betterC and how?

"Adam D. Ruppe" <destructionator gmail.com> writes:

On Tuesday, 14 October 2014 at 13:20:50 UTC, eles wrote:
 http://forum.dlang.org/post/lddug4$jgv$1 digitalmars.com

That was just a speculative thread, that stuff isn't implemented. 
(And I think that went way too far, IMO betterC should just 
remove the mandatory stuff like ModuleInfo and TypeInfo 
assumptions and leave the rest to be opt in. I'd be against it 
making exception handling an error).

-betterC right now is still an undocumented hack that doesn't do 
much.

"eles" <eles eles.com> writes:

On Tuesday, 14 October 2014 at 13:31:47 UTC, Adam D. Ruppe wrote:
 On Tuesday, 14 October 2014 at 13:20:50 UTC, eles wrote:
 http://forum.dlang.org/post/lddug4$jgv$1 digitalmars.com


 -betterC right now is still an undocumented hack that doesn't 
 do much.

Thank you.

ketmar via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> writes:

On Tue, 14 Oct 2014 13:20:49 +0000
eles via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> wrote:

 What code would fail under -betterC and how?

currently betterC disables module info generation and some module
helper functions generation. that's all. just grep DMD sources for
"betterC" and you'll see it.