Explain this sscanf behavior.

[Nick Mason]

In article <376 at demott.COM> kdq at demott.COM (Kevin D. Quitt) writes:
>In article <1990Jul6.181830.2549 at tc.fluke.COM> mason at tc.fluke.COM (Nick Mason) writes:
>>
>>I tried this with 3 different compilers and got the following:
>>
>>compiler A:
>>
>>	x=1   a=123  b=3
>>	x=1   a=123  b=3
>>
>>compiler B:
>>
>>	x=1   a=123  b=3
>>	x=1   a=123  b=4  <-- yes 4.
>>
>>compiler C:
>>
>>	x=1  a=123  b=3
>>	x=1  a=123  b= -99
>>
>
>    I'm confused by example C: where did it get the old value of b? BTW,
>Microsoft C and cc on Motorola Delta 3x00 agree with A, and gnu's gcc
>coredumps. 
>
What version of Microsoft C did you use and what memory model??

Compiler A is SUN 4.0 cc,
Compiler B is MSC 5.1 large model, 
Compiler C is MSC 6.0 large model.

And I agree, gnu's gcc coredumps.

Nick.