[Bug c/17946] wanted: warning for "a && MASK" when "a & MASK" was probably intended

[trt at acm dot org]

------- Additional Comments From trt at acm dot org  2004-10-12 14:45 -------
Patch here: http://gcc.gnu.org/ml/gcc-patches/2004-10/msg00990.html

This patch does not warn about "a && 1" for the reason noted in comment #1. 
Some mistakes will go unwarned, but it still catches quite a lot.

The concern expressed in comment #2 is quite plausible, but I have not found it
to be an issue in practice.  e.g. A gcc "make bootstrap" never triggers this
warning.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17946