Red Hat Bugzilla – Bug 240519
prelink should update .dynsym st_shndx fields, STT_SECTION st_values
Last modified: 2008-05-06 16:06:55 EDT
eu-elflint --gnu-ld complains about a prelinked ET_EXEC when it had .bss split
into .dynbss+.bss, because .dynsym symbols for bss symbols all refer to one
section. Symbols that are now in .dynbss should have their st_shndx fields set
to the index of .dynbss. This does not affect the dynamic linker, but does
leave the symbol table in a nonkosher state. The same applies to .symtab in
unstripped binaries for prelink, I expect. Similarly, the STT_SECTION symbols
for allocated sections that were moved around by prelink should have their
st_value's updated. Some linkers have produced section symbols even in .dynsym,
so best to be thorough (or else edit the STT_SECTION and any other unreferenced
local symbols out entirely if you are doing that sort of thing in prelink).
It's possible that some debugger consumer would like to use st_shndx and can be
confused by wrong indices, though most likely it's only elflint that cares.
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In the source it looks like this was fixed a while ago.