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Re: What do you Hate about Subversion?

From: Andreas Schweigstill <andreas_at_schweigstill.de>
Date: 2007-01-29 02:51:42 CET

Hello!

Victor A. Wagner Jr. schrieb:
> And any project that actually CARES about the
> line difference has some serious architecture/design problems.

The C compiler and assembler from ARM ADS 1.x arent't able to create
proper line numbering in the debug information when the source file has
mixed EOL style. I found out that it determines EOL style only
from the first line of source code. I don't know if ARM/Norcroft fixed
this problem on newer versions (RDS).

There are also some problems with C preprocessor definitions. Example:

...
{
    foo(x);
#define DEBUG
    do_something_very_important();
...

#if DEBUG
    bar();
#endif /* DEBUG */
}
...

When the compiler assumes CR/LF line endings the call of
do_something_very_important() can become a part of the macro definition
DEBUG. Especially if macros are used only as flags and never be expanded
as source code (like the DEBUG switch) there won't be a compiler message
(error or just warning) telling that do_something_very_important() will
never be executed.

With best regards
Andreas Schweigstill

-- 
Dipl.-Phys. Andreas Schweigstill
Schweigstill IT | Embedded Systems
Schauenburgerstraße 116, D-24118 Kiel, Germany
Phone: (+49) 431 5606-435, Fax: (+49) 431 5606-436
Mobile: (+49) 171 6921973, Web: http://www.schweigstill.de/
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Received on Mon Jan 29 02:52:12 2007

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