https://sourceware.org/bugzilla/show_bug.cgi?id=28926
Bug ID: 28926
Summary: objcopy --weaken-symbol does not weaken STB_GNU_UNIQUE
symbols
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: i at maskray dot me
Target Milestone: ---
echo '.data; .type x, @gnu_unique_object; x:' | as - -o a.o
objcopy -W x a.o
readelf -Ws a.o
The symbol 'x' remains STB_GNU_UNIQUE:
Symbol table '.symtab' contains 2 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000000000 0 OBJECT UNIQUE DEFAULT 2 x
I think with the explicit request, it makes sense to weaken 'x'.
The documentation for --weaken is:
--weaken
Change all global symbols in the file to be weak. This can be
useful when building an object which will be linked against other objects using
the -R option to the linker. This option is only effective when using an
object file format which supports weak symbols.
If we consider STB_GNU_UNIQUE "global", then --weaken probably should weaken
STB_GNU_UNIQUE, too.
--
You are receiving this mail because:
You are on the CC list for the bug.
