Touch all the nodes of a tree returning a check sum. This is useful * in order to make Valgrind detect if there is something wrong while * reading the data structure. * * This function was used in order to identify Rax bugs after a big refactoring * using this technique: * * 1. The rax-test is executed using Valgrind, adding a printf() so that for * the fuzz tester we see what iteration
source not stored for this graph (policy: none)
nothing calls this directly
no test coverage detected