https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115968
--- Comment #3 from HanatoK <summersnow9403 at gmail dot com> --- (In reply to Andrew Pinski from comment #2) > See C++11 and the auto keyword section of > https://eigen.tuxfamily.org/dox/TopicPitfalls.html > > > The problem is that eval() returns a temporary object (in this case a > MatrixXd) which is then referenced by the Transpose<> expression. However, > this temporary is deleted right after the first line, and then the C > expression references a dead object. Thanks! I can confirm that with the clang sanitizers "-fsanitize=address,undefined,leak" I encounter the "stack-use-after-scope" error, so the clang result is actually printed from out-of-scope variables. I think you are right that I misuse the auto keyword.
