[Coco] getenv bug in cgfx explanation

[Gene Heskett]

On Saturday 12 December 2009, Willard Goosey wrote:
>On Sat, Dec 12, 2009 at 10:45:06AM -0500, Gene Heskett wrote:
>> Thank you very much Willard.  For those who would like a copy of his
>> original email, I've placed it in the 3rdparty tree of the nitros9
>> link on my web page, commented such that it should compile, as
>> cgfx7-fix.c.
>
>You could grab the rest of the cgfx7 source from rtsi.  I posted the
>entire "getenv.c" file since we don't seem to have diff.
>
>I was simply not in the mode to try to recompile the entire library.
>I just knew it wouldn't work for some reason.  And then I would have
>had to shoot my CoCo. :-(
>
>> As for your comment re there being 3 copies of the mouse in there, I
>> would suspect they are all identical,
>
>Nope, Point rdump -a at the library.  Sweet's source has three files
>which all get turned into ROF modules named "mouse" :-(.  One holds
>shadow(), one is _gs_mous() (and other fucntions) and the third is
>mousexy().  The "lb" library splitter I found uses fopen(), which
>clobbers already existing files.  (The one time I'm in favor of OS-9's
>"noclobber" design...)
>
>The source files shadow.a, mouse.a, and mousexy.a are all "psect
>mouse". ;-)
>
>Here's the relevant bits from rdump...
>
>Module name: mouse
>TyLa/RvAt:   00/00
>Asm valid:   Yes
>Create date: Sep 23, 1990 11:19
>Edition/ROF:  0/0
>  Section    Init Uninit
>   Code:     0057
>     DP:       00   00
>   Data:     0000 0000
>  Stack:     0000
>Entry point: 0000
>
>1 global symbol defined:
>    Shadow 0000 (04) to code
>
>
>Module name: mouse
>TyLa/RvAt:   00/00
>Asm valid:   Yes
>Create date: Sep 23, 1990 11:20
>Edition/ROF:  0/0
>  Section    Init Uninit
>   Code:     0040
>     DP:       00   00
>   Data:     0000 0000
>  Stack:     0000
>Entry point: 0000
>
>3 global symbols defined:
>  _ss_msig 0022 (04) to code
>  _gs_mous 002d (04) to code
>  _ss_mous 0000 (04) to code
>
>
>Module name: mouse
>TyLa/RvAt:   00/00
>Asm valid:   Yes
>Create date: Sep 23, 1990 11:21
>Edition/ROF:  0/0
>  Section    Init Uninit
>   Code:     0047
>     DP:       00   00
>   Data:     0000 0000
>  Stack:     0028
>Entry point: 0000
>
>1 global symbol defined:
>   MouseXY 0000 (04) to code
>
I sit corrected. :-)  Won't be the first time either. ;-)
>
>I really don't know if the linker needs to be changed, but I might
>take a stab at making "lb" not clobber files if the library has
>multiple objects with the same psect name.
>
>Willard
>


-- 
Cheers, Gene
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