http://d.puremagic.com/issues/show_bug.cgi?id=3321

           Summary: debug flags
           Product: D
           Version: 2.031
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: ellery-newcomer@utulsa.edu


--- Comment #0 from Ellery Newcomer <ellery-newcomer@utulsa.edu> 2009-09-16 20:12:35 PDT ---
test.d:

debug pragma(msg,"hi!");
void main() {}


$ dmd2 test
(no output)

$ dmd2 -debug test
hi!

$ dmd2 -debug=1 test
hi!

$ dmd2 -debug=ellery test
(no output)                      WHAT???????

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--- Comment #1 from Ellery Newcomer <ellery-newcomer@utulsa.edu> 2009-09-16 20:23:48 PDT ---
a quick peek in the source shows that debug <=> debug(1)

is this sane behavior?

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Ary Borenszweig <ary@esperanto.org.ar> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ary@esperanto.org.ar


--- Comment #2 from Ary Borenszweig <ary@esperanto.org.ar> 2009-09-17 04:18:53 PDT ---
Yes, that's normal behaviour. And:

$ dmd2 -debug=ellery test

will print "hi!" if the code is:

debug(ellery) pragma(msg,"hi!");
void main() {}

I won't close this as invalid because the specification doesn't say exactly this. It says:

---
The debug condition is satisfied when the -debug switch is thrown on the compiler.

The debug ( Integer ) condition is satisfied when the debug level is >=
Integer.

The debug ( Identifier ) condition is satisfied when the debug identifier
matches Identifier.
---

It should say:

The debug condition is satisfied when the -debug switch is thrown on the compiler or when a debug level >= 1 is indicated.

(or something like that)

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--- Comment #3 from Ellery Newcomer <ellery-newcomer@utulsa.edu> 2009-09-17 07:44:38 PDT ---
(In reply to comment #2)
> Yes, that's normal behaviour.

According to whom? The C preprocessor?

When I read the spec, I came away with the impression that debug should work like so:

debug { stuff } should get compiled if the compiler is given -debug or -debug={something}. Basically, I see it as a boolean. Are we in a debug compile?

debug(number) { stuff } should get compiled if the compiler is given -debug=n,
where n >= number (and there's nothing that says debug(0) { stuff } will always
get compiled)

wait, I'm seeing a pattern here 1 -> true, 0 -> false. That sorta makes sense.

debug(id) { stuff } should get compiled if the compiler is given -debug=id


Yeah, spec needs to be more precise. I would like to see -debug=id => debug_level=1, though.

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jlquinn@optonline.net


--- Comment #4 from yebblies <yebblies@gmail.com> 2011-06-12 22:11:46 PDT ---
*** Issue 3721 has been marked as a duplicate of this issue. ***

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Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull, spec
                 CC|                            |andrej.mitrovich@gmail.com
           Platform|Other                       |All
            Version|2.031                       |D2
         AssignedTo|nobody@puremagic.com        |andrej.mitrovich@gmail.com
         OS/Version|Linux                       |All


--- Comment #5 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-02-06 17:25:47 PST ---
https://github.com/D-Programming-Language/d-programming-language.org/pull/256

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--- Comment #6 from github-bugzilla@puremagic.com 2013-02-06 17:53:08 PST ---
Commits pushed to master at https://github.com/D-Programming-Language/d-programming-language.org

https://github.com/D-Programming-Language/d-programming-language.org/commit/74ab0d4e6ba28611ebcf2b58187b9a5527f2370b Fixes Issue 3321 - Debug switch is underdocumented.

https://github.com/D-Programming-Language/d-programming-language.org/commit/7c316bbe55c6d932b63efafc133f1477cf718edc Merge pull request #256 from AndrejMitrovic/Fix3321

Issue 3321 - Debug switch is underdocumented.

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Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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