RFA: Debug sections seems to be emitted wrong for pe-coff

[Kai Tietz]

2009/6/22 Kai Tietz <ktietz70@googlemail.com>:
> 2009/6/22 Dave Korn <dave.korn.cygwin@googlemail.com>:
>> Dave Korn wrote:
>>> Dave Korn wrote:
>>>> Kai Tietz wrote:
>>>>
>>>>> I noticed that some days ago (the version on the 12th of June worked
>>>>> proper) the executables containing debugging information seems to be
>>>>> broken.
>>
>>  This is from Christian's testcase "a.exe" attached to GCC PR 40455:
>>
>>  6 .debug_aranges 00000020  00406000  00406000  00001000  2**0
>>                  CONTENTS, READONLY, DEBUGGING
>>
>>  This is from any other random cygwin executable on my machine:
>>
>>  5 .debug_aranges 00000900  00588000  00588000  00178200  2**3
>>                  CONTENTS, READONLY, DEBUGGING
>>
>>  The alignment has changed.  Wonder if that's the root of the problem?  I
>> can't find any relocs in this file, so maybe we have two problems.
>>
>>    cheers,
>>      DaveK
>>
>
> Well, I was wondering first, too. But I assume that they are in the
> pei-relocator data. Because I took a look on my test app (for
> debugging information) and saw that a .secrel32 was present, so this
> means there has to be at least this relocation.
>
> Cheers,
> Kai
>
> --
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>

The intersting thing I noticed is that section flag IMAGE_SCN_MEM_DISCARDABLE uy

is set for all debugging sections, even if the don't have SEC_ALLOC
and SEC_LOAD set. This of course wrong as section without those two
flags aren't loaded at all and therefor can't be discardable. I assume
this is at least one of those issues we have here.

Cheers,
Kai

PS: see coffcode.h (sec_to_styp_flags)

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