On Wed, Aug 19, 2020 at 04:34:30PM +0100, Nick Clifton wrote: > Hi Mark, > > > Adding Nick, the binutils maintainer, so we can make sure > > binutils/elfutils agree on some ELF section compression corner case. > > Thanks for doing this. > > > But it would obviously be better if that wasn't necessary. So I'll try > > to fix libelf so that if it fixes up the alignment when reading the > > compressed data, it also does that when writing out the data again. But > > that would only help for a new version of elfutils. > > > > So it would be nice if binutils ld could also be fixed to write out > > compressed sections with the correct alignment. > > OK, I will look into doing this. > > By any chance is there a small test case that you are using to check > this behaviour ? If so, please may I have a copy for myself ?
so when I take empty object and compile like: $ echo 'int main(int argc, char **argv) { return 0; }' | gcc -c -o ex.o -g -gz=zlib -x c - $ ld -o ex --compress-debug-sections=zlib ex.o then there's .debug_info section that shows sh_addralign = 1 after I open the 'ex' obejct with elf_begin and iterate sections according to Mark that should be 8 (on 64 bits) when I change it to 8, the elf_update call won't fail for me on that elf file thanks, jirka