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digitalmars.D.bugs - std.boxer linker error

reply Brad Roberts <braddr puremagic.com> writes:
On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
tracked down just yet.

$ cat test_box.d
import std.boxer;

int main()
{
    Box foo = box(1);
    int bar = unbox!(int)(foo);

    return 0;
}

$ dmd -g -v 
test_box.d
parse     test_box
semantic  test_box
semantic2 test_box
semantic3 test_box
code      test_box
generating code for function 'main'
generating code for function 'unbox'
generating code for function 'unboxCastInteger'
gcc test_box.o -o test_box -g -lphobos -lpthread -lm -Xlinker
-L/workplace/bradrob/dmd-0.148/dmd/lib 
test_box.o(.gnu.linkonce.t_D3std5boxer24__T16unboxCastIntegerTiZ16unboxCastIntegerFS3st
5boxer3BoxZi+0x18): In function
`_D3std5boxer24__T16unboxCastIntegerTiZ16unboxCastIntegerFS3std5boxer3BoxZi':
/workplace/bradrob/d-playground/test_box.d:5: undefined reference to
`_assert_3std5boxer'
collect2: ld returned 1 exit status
--- errorlevel 1


Commenting out the assert in std/boxer.d inside unboxCastInteger(T) at 
line 429 allows the link to succeed.

Similarly, if I use something other than an int and hit one of the other 
unboxCast[pick a type] templates I get the same problem.

Thoughts?

Thanks,
Brad
Mar 02 2006
parent reply Derek Parnell <derek psych.ward> writes:
On Thu, 2 Mar 2006 17:38:00 -0800, Brad Roberts wrote:


 On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
 tracked down just yet.


On Windows, you have to compile anything that imports std.boxer with the
"-release" switch to get the linker happy.

-- 
Derek
(skype: derek.j.parnell)
Melbourne, Australia
"Down with mediocracy!"
3/03/2006 3:18:27 PM
Mar 02 2006
next sibling parent Brad Roberts <braddr puremagic.com> writes:
On Fri, 3 Mar 2006, Derek Parnell wrote:


 On Thu, 2 Mar 2006 17:38:00 -0800, Brad Roberts wrote:
 

 On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
 tracked down just yet.


 
 On Windows, you have to compile anything that imports std.boxer with the
 "-release" switch to get the linker happy.
 
 -- 
 Derek
 (skype: derek.j.parnell)
 Melbourne, Australia
 "Down with mediocracy!"
 3/03/2006 3:18:27 PM


Not a bad temporary work around, but only temporary since that 
disables all asserts.

Thanks,
Brad
Mar 02 2006
prev sibling parent reply Don Clugston <dac nospam.com.au> writes:
Derek Parnell wrote:

 On Thu, 2 Mar 2006 17:38:00 -0800, Brad Roberts wrote:
 

 On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
 tracked down just yet.


 
 On Windows, you have to compile anything that imports std.boxer with the
 "-release" switch to get the linker happy.


Do we know the reason for that? Has it been reduced to a minimal test case?
Mar 03 2006
parent reply Thomas Kuehne <thomas-dloop kuehne.cn> writes:
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Hash: SHA1

Don Clugston schrieb am 2006-03-03:

 Derek Parnell wrote:

 On Thu, 2 Mar 2006 17:38:00 -0800, Brad Roberts wrote:
 

 On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
 tracked down just yet.


 
 On Windows, you have to compile anything that imports std.boxer with the
 "-release" switch to get the linker happy.


 Do we know the reason for that? 


DMD generates different symbols depending on the state of the "-release" switch.


 Has it been reduced to a minimal test case?


Not as far as I know.

Thomas


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Mar 05 2006
parent Brad Roberts <braddr puremagic.com> writes:
On Sun, 5 Mar 2006, Thomas Kuehne wrote:


 Don Clugston schrieb am 2006-03-03:

 Derek Parnell wrote:

 On Thu, 2 Mar 2006 17:38:00 -0800, Brad Roberts wrote:
 

 On linux with dmd 0.148, I'm seeing some odd linking issues that I haven't 
 tracked down just yet.


 
 On Windows, you have to compile anything that imports std.boxer with the
 "-release" switch to get the linker happy.


 Do we know the reason for that? 


 
 DMD generates different symbols depending on the state of the "-release"
switch.
 

 Has it been reduced to a minimal test case?


 
 Not as far as I know.
 
 Thomas


I tried a little bit to reduce the problem.  If you're looking for a 
single file contained test case then I'm not sure that's doable.  I 
suspect this might relate to the other threads going on right now about 
symbols changing visibility based on compiler options.

Random thought:  Now that dmd can produce .di files, THOSE are what should 
be used now rather than the full .d's during subsequent compilation.  I 
haven't checked their output, but I assume that the unused paths around 
version, debug, release, etc are omitted such that the .di file _exactly_ 
matches the .o/.obj files produced.

Later,
Brad
Mar 05 2006