Jed, just for the sake of consistency, don't we need PetscFree1()? Also, PetscFree() is a macro, and evaluates twice the first arg, I just had to fix a bug in my code that was doing while (ctx->size > 0) PetscFree(ctx->arrayOfPointers[--ctx->size]); PetscFree(ctx->arrayOfPointers) I guess we should just rewrite PetscFree() to be safer, but too close to release right now to play these games... -- Lisandro Dalcin ============ Research Scientist Computer, Electrical and Mathematical Sciences & Engineering (CEMSE) Extreme Computing Research Center (ECRC) King Abdullah University of Science and Technology (KAUST) http://ecrc.kaust.edu.sa/ 4700 King Abdullah University of Science and Technology al-Khawarizmi Bldg (Bldg 1), Office # 0109 Thuwal 23955-6900, Kingdom of Saudi Arabia http://www.kaust.edu.sa Office Phone: +966 12 808-0459