On Tue, 1 Aug 2017, Harshad Sahasrabudhe wrote:
I got a segfault when I called the PointLocatorTree::operator() function. Does anyone know why the segfault? Thanks! Here's the backtrace:
What libMesh version are you using? Those line numbers don't seem to match up to master or 1.2.x. If I'm right about the line number offset between whatever you're using and master, though, it looks like the segfault is either a NULL element dereference or a dangling pointer dereference in find_element. I don't know what could cause the former to happen. The latter could happen if you deleted mesh elements without rebuilding the point locator afterwards, maybe? --- Roy
(gdb) bt #0 0x00002aaffd5a5e7b in libMesh::TreeNode<8u>::find_element (this=0x5a6f810, p=..., allowed_subdomains=0xd6, relative_tol=9.9999999999999995e-07) at src/utils/tree_node.C:481 #1 0x00002aaffd5a5a72 in libMesh::TreeNode<8u>::find_element_in_children ( this=0x5a6f810, p=..., allowed_subdomains=0xd6, relative_tol=9.9999999999999995e-07) at src/utils/tree_node.C:513
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