gdb没有给出核心转储的原因

Question

Typically when analyzing a core dump in gdb it'll print the reason why it was generated:

Core was generated by `executable'.
Program terminated with signal 11, Segmentation fault.

However I've encountered a situation where gdb isn't giving a reason:

Core was generated by `executable'.

I'm wondering what could cause a core dump where gdb doesn't give the reason for its generation.

Answer 1

It turns out that this core file was generated using gcore, so there wasn't actually a problem with the executable. /facepalm