RE: Pointing to the wrong thing......

["Josiah Avery" <josiahavery@hotmail.com>]

*** Hello.

>Therein lies your problem is correct :) When you free() the space, >you are 
>saying to the computer/compiler "I am done with this." After >that, the 
>results are undefined as to what happens to the space >and/or access 
>violations regarding that space.
>
>Only free() space when you are really done with it, since often >compilers, 
>especially in debug mode, will write over that space >immediately.

*** Thanks.

    I fixed the problem by having the caller function free the space 
allocated in the callee. Here are some new logs:

edge1 @ 4F47:0004 = x = 20 y = 90
edge2 @ 4F92:0004 = x = 20 y = 0
edge3 @ 4FDD:0004 = x = 20 y = 90

edge1 @ 4F47:000A = x = 20 y = 89
edge2 @ 4F92:000A = x = 19 y = 0
edge3 @ 4FDD:000A = x = 20 y = 89

edge1 @ 4F47:0010 = x = 20 y = 88
edge2 @ 4F92:0010 = x = 18 y = 0
edge3 @ 4FDD:0010 = x = 20 y = 88

edge1 @ 4F47:0016 = x = 20 y = 87
edge2 @ 4F92:0016 = x = 17 y = 0
edge3 @ 4FDD:0016 = x = 20 y = 87

edge1 @ 4F47:001C = x = 20 y = 86
edge2 @ 4F92:001C = x = 16 y = 0
edge3 @ 4FDD:001C = x = 19 y = 86

*** Thanks all who have helped.

     If anyone whats to look at an object oriented implementation of 
polygonal scan conversion, letme know.

     Josiah.
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