https://sourceware.org/bugzilla/show_bug.cgi?id=25551
Bug ID: 25551
Summary: R_X86_64_PLT32 referencing .L should not emit an
outstanding relocation
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: i at maskray dot me
Target Milestone: ---
Context: https://github.com/ClangBuiltLinux/linux/issues/872
.section .init.text,"ax",@progbits
call .Lprintk$local
# -- End function
.text
.globl printk # -- Begin function printk
.type printk,@function
printk: # @printk
.Lprintk$local:
ret
% as a.s -o a.o
% readelf -Wrs a.o
Relocation section '.rela.init.text' at offset 0x108 contains 1 entry:
Offset Info Type Symbol's Value
Symbol's Name + Addend
0000000000000001 0000000500000004 R_X86_64_PLT32 0000000000000000
.Lprintk$local - 4
...
5: 0000000000000000 0 NOTYPE LOCAL DEFAULT 1 .Lprintk$local
Delete `.section .init.text,"ax",@progbits`, and there will be no
relocation.
R_X86_64_PC32 does not emit the relocation. call .Lprintk$local emits an
R_X86_64_PC32 before:
commit bd7ab16b4537788ad53521c45469a1bdae84ad4a
Author: H.J. Lu <[email protected]>
Date: Tue Feb 13 07:34:22 2018 -0800
x86-64: Generate branch with PLT32 relocation
https://sourceware.org/ml/binutils/2020-02/msg00243.html should fix the bug.
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