[Bug binutils/22249] New: objdump --dwarf-start can be very slow

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=22249

            Bug ID: 22249
           Summary: objdump --dwarf-start can be very slow
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: tromey at sourceware dot org
  Target Milestone: ---

I have a very large debuginfo file.
I'm trying to examine a CU somewhere in the middle to see if there
is a bug in some debuginfo generation.
(See https://github.com/rust-lang/rust/issues/44412 for the gory details)

I wanted to use objdump --dwarf-start, but this is very slow in this
case.

It could be a bit more intelligent by noticing when the start offset
doesn't appear in the current CU -- it could just skip to the next CU.
This would be much faster.

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