https://sourceware.org/bugzilla/show_bug.cgi?id=24526
Fangrui Song <i at maskray dot me> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|gold |ld
--- Comment #1 from Fangrui Song <i at maskray dot me> ---
This is a feature request to both GNU ld and gold.
# a.s
.globl _start
_start:
.quad .foo
.section .foo,"a"
.quad 0
.section .bar,"ao",@progbits,.foo
.quad 0
.section .zed,"ao",@progbits,.foo
.quad 0
llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
ld.bfd --gc-sections a.o -o a; readelf -S a # .bar and .zed were collected
gold --gc-sections a.o -o a; readelf -S a # .bar and .zed were collected
ld.lld --gc-sections a.o -o a; readelf -S a # .bar and .zed were retained
In lld, the SHF_LINK_ORDER sections .bar and .zed are treated like .rela.foo.
The retain of .foo will also keep .bar and .zed alive.
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