https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80730
--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- On Sat, 13 May 2017, msebor at gcc dot gnu.org wrote: > I don't see what purpose rejecting > > bool b = ""; > > serves when > > bool b = !!""; > > or even > > bool b = "" ? 1 : 0; > > are accepted. My comment is specifically about what's valid in the standard. I don't think any of those should be considered valid standard C. What's accepted beyond that, based on folding to a constant, is a separate matter (various things that aren't constant expressions are accepted in various contexts with pedwarns-if-pedantic because of existing code that makes use of them).
