[phobos] FreeBSD 32 still fails unittests for std.datetime

[Walter Bright]

On 5/2/2011 9:18 PM, Walter Bright wrote:
>
>
> On 5/2/2011 1:14 PM, Jonathan M Davis wrote:
>>
>> The problem is far worse on Windows than on Linux - both in terms of the
>> amount of memory eaten by dmd and because the Windows unit tests are all
>> compiled together instead of separately, but dmd still eats too much memory on
>> OSes other than Windows. FreeBSD would have the unit tests compiled separately
>> like on Linux, so dmd shouldn't be running out of memory in the same way as
>> occurs on Windows, but it could still be using a lot of memory, and if
>> Walter's machine doesn't have a lot of it, and if FreeBSD tries to kill
>> processes that use too much, then that could be the problem. On Windows, it
>> very clearly states that dmd ran out of memory, but if the OS just kills the
>> process, then you might not get such a clear message.
>>
>> I've been hoping that Don's CTFE fixes would reduce dmd's memory footprint
>> enough to get rid of issue 5454, but since they're buggy enough that Phobos'
>> unit tests don't currently build, I have no idea how close they've gotten to
>> fixing the problem.
>>
>
> On FreeBSD it's getting a "Killed: 9" message while running dmd after running 
> for a looong time. Running under gdb shows it dying somewhere deep in malloc().
>

By deleting unittests one by one, I got it to pass dmd. Now if fails with a 
"Killed: 9" message from ld, the linker. Checking the object file for datetime.o 
yields a 4.6 Mb file (and that's without debug info turned on!). Clearly, 
reducing the memory consumption of dmd will not fix this problem.

Compiling std.datetime with -release -O gives a 441,000 byte object file.