https://sourceware.org/bugzilla/show_bug.cgi?id=27447
Bug ID: 27447
Summary: readelf does not support DWARF 5 forms
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 compiled a simple C program with "clang -g -gdwarf-5 -gpubnames".
When I try to use "readelf" on it, I get some errors:
readelf: Warning: Unrecognized form: 37
readelf: Warning: Unrecognized form: 37
readelf: Warning: Unrecognized form: 37
readelf: Warning: Unsupported form (DW_FORM_strx1) for attribute DW_AT_comp_dir
readelf: Warning: Unrecognized form: 27
readelf: Warning: DIE at offset 0x1f refers to abbreviation number 8 which does
not exist
Sure enough, readelf doesn't seem to support some DWARF 5 forms:
DW_FORM (DW_FORM_addrx, 0x1b)
...
DW_FORM (DW_FORM_strx1, 0x25)
I didn't do an exhaustive check but it's easy to see that some are missing from
dwarf.c, at least read_and_display_attr_value and skip_attr_bytes ... maybe
other
spots as well.
Strangely, to me, I get this error even with "readelf -WS". I didn't
understand why
this is reading DWARF forms at all.
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