[klibc] [PATCH 1/1] workaround for overlapping sections in binary

Ben Hutchings ben at decadent.org.uk
Tue Apr 27 15:17:07 PDT 2021

On Wed, 2021-02-03 at 10:05 +0300, Petr Ovtchenkov wrote:
> Problem: binary (typesize.bin) created from object file (typesize.o)
> with 'objcopy -O binary ... '. But typesize.o has relocatable objects that all
> copied with offset 0. This will lead to overlapping sections in binary.
> By fortunate syscalls.pl check magic bytes and ring the bell.
> This is naive workaround: skip .note.gnu.property section that overlap
> .rodata section.
> This not a bug of objcopy,  
> https://sourceware.org/bugzilla/show_bug.cgi?id=27314

Since all the sections overlap each other, we could have the same
trouble again with another note or debug section.

We only actually want the read-only data section, so why don't we
tell objcopy that by adding "--only-section .rodata" instead?


Ben Hutchings
For every action, there is an equal and opposite criticism. - Harrison
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