On 3 October 2014 11:30, Henrik Mannerström wrote: > On 10/03/2014 01:20 PM, Jonathan Wakely wrote: >> My guess is that Sigma holds a dangling reference to some temporary >> object that has gone out of scope, and the function call t2s >> overwrites that stack memory, then when you return to main you go >> through the dangling reference. >> >> Are you sure you're using the Eigen types correctly? > You are right, the auto type does not force the evaluation of Sigma, > which leaves the dangling reference. Yet again I get burned by trying to > combine Eigen and C++11. How would you classify this, could you call it > a bug in Eigen, or just incompatibility with C++11? As Marc says, expression templates are often incompatible with 'auto', that doesn't mean Eigen is incompatible with C++11 in general.
