------- Comment #9 from mark at codesourcery dot com 2008-07-10 03:42 ------- Subject: Re: [4.4 regression] warning "array subscript is below array bounds" on delete [] with -O2, -Wall
paolo dot carlini at oracle dot com wrote: > Mark, could you possibly comment on this PR? With some good hints I could even > try to work on it... I don't see that the C++ front-end is doing anything obviously wrong here. The cast to (long unsigned int *) is coming from the presence of the array "cookie". When we allocate an array, we allocate a few extra bytes and scribble the length of the array into that extra space. Then, when the user does "delete[]" we know how many array elements there are, so we can run all the destructors. See: http://www.codesourcery.com/public/cxx-abi/abi.html#array-cookies Thanks, -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36633
