https://sourceware.org/bugzilla/show_bug.cgi?id=29451
Nick Clifton <nickc at redhat dot com> changed:
What |Removed |Added
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CC| |nickc at redhat dot com
--- Comment #3 from Nick Clifton <nickc at redhat dot com> ---
(In reply to Sergei Trofimovich from comment #0)
> <28> DW_AT_low_pc : (addr) 0x0
> <2c> DW_AT_high_pc : (addr) 0x0
> Would it be fair to say it's a bug to assign zero size here via DW_AT_low_pc
> / DW_AT_high_pc?
Actually it *is* fair to give them 0 values. (The values are addresses, not
sizes). The reason is that the address of the start and end of the
__x86.get_pc_thunk.bx function has not been assigned yet. (This is an object
file, not a fully linked executable).
If you look at the relocations for the crti.o file you find:
Relocation section '.rel.debug_info' at offset 0x288 contains 12 entries:
Offset Info Type Sym. Value Symbol's Name
[...]
00000036 00000901 R_386_32 00000000 __x86.get_pc_thunk.bx
0000003a 00000901 R_386_32 00000000 __x86.get_pc_thunk.bx
So when this file is linked in with object files and these relocations are
resolved the correct values for the __x86.get_pc_thunk.bx symbol will be
installed into the .debug_info section, and everything should work.
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