Dave Seaman writes:
By the definition of unary minus, -x^2 is the number such that
x^2 + (-x^2) = 0.

Begging the question.

Phil

--
1st bug in MS win2k source code found after 20 minutes: scanline.cpp
2nd and 3rd bug found after 10 more minutes: gethost.c
Both non-exploitable. (The 2nd/3rd ones might be, depending on the CRTL)