No. As my code showed, I was implementing 1-based (FORTRAN) arrays. While I am still curious about this, I think I’ll just flatten my matrices and do the indexing manually. This is feasible for me since my matrices are never more than 3-D. I tried this and it does not hang.
> On Dec 11, 2015, at 2:11 PM, Jens Alfke <j...@mooseyard.com> wrote: > > >> On Dec 11, 2015, at 10:23 AM, Michael McLaughlin <mmclaughl...@cox.net >> <mailto:mmclaughl...@cox.net>> wrote: >> >> v2.resize(length); >> for (c = 0;c <= length;c++) >> v2[c].resize(length2); > > You have an off-by-one bug and are writing past the end of the v2 vector. > (The “<=“ should be “<“.) For random reasons depending on how the heap > happens to be laid out at the moment, this will sometimes be benign and > sometimes cause terrible problems. > > PSA: Turning on the Address Sanitizer in Xcode 7 (it’s in the Run and Test > sections of the scheme editor) would probably have caught this at the moment > it occurred. > > —Jens > -- Michael McLaughlin mmclaughl...@cox.net
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