Is there a point to trapping “segfault”?

Question

I know that, given enough context, one could hope to use constructively (i.e. recover) from a segfault condition.

But, is the effort worth it? If yes, in w

Answer 1

a Segmentation Fault is really accessing memory that you do not have permission to access ( either because it's not mapped, you don't have permissions, invalid virtual address, etc. ).

Depending on the underlying reason, you may want to trap and handle the segmentation fault. For instance, if your program is passed an invalid virtual address, it may log that segfault and then do some damage control.

A segfault does not necessarily mean that the program heap is corrupted. Reading an invalid address ( eg. null pointer ) may result in a segfault, but that does not mean that the heap is corrupted. Also, an application can have multiple heaps depending on the C runtime.