read/cfi: fix hack for zero length entries in .debug_frame

gimli-rs / gimli

A library for reading and writing the DWARF debugging format

https://docs.rs/gimli/

Apache License 2.0

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Closed philipc closed 4 months ago

philipc commented 4 months ago

There were two problems with this hack:

returned an error for zero length entries at the end of the section
returned an entry for cie_from_offset/fde_from_offset when the requested offset is the zero length entry

Fix by moving the zero length handling into the iterator.

This is a followup to #486