https://sourceware.org/bugzilla/show_bug.cgi?id=23261
Bug ID: 23261
Summary: objcopy doesn't convert REL to RELA relocations when
converting from i386 to x86-64.
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: s at pahtak dot org
Target Milestone: ---
Created attachment 11055
--> https://sourceware.org/bugzilla/attachment.cgi?id=11055&action=edit
Object file which demonstrates the problem.
Converting a relocatable elf32-i386 file with REL relocations (implicit
addends) to elf64-x86-64 converts the relocation sections to 64-bit but does
not convert to RELA (explicit addend) relocations.
Run
objcopy -I elf32-i386 -O elf64-x86-64 bug.o bug-64.o
on the attached bug.o and examine the result with readelf -S bug-64.o
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text._start PROGBITS 0000000000000000 00000040
0000000000000007 0000000000000000 AX 0 0 16
[ 2] .rel.text._start REL 0000000000000000 00000128
0000000000000010 0000000000000010 I 4 1 8
[ 3] .text.foo PROGBITS 0000000000000000 00000050
000000000000000a 0000000000000000 AX 0 0 16
[ 4] .symtab SYMTAB 0000000000000000 00000060
00000000000000a8 0000000000000018 5 6 8
[ 5] .strtab STRTAB 0000000000000000 00000108
0000000000000020 0000000000000000 0 0 1
[ 6] .shstrtab STRTAB 0000000000000000 00000138
0000000000000036 0000000000000000 0 0 1
The resulting object file is correctly handled by ld.bfd, causes an internal
error in ld.gold
ld.gold: internal error in scan_relocatable_relocs, at
../../gold/x86_64.cc:5118
and is linked incorrectly in ld.lld (it ignores the implicit addend of REL in
x86-64).
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
https://lists.gnu.org/mailman/listinfo/bug-binutils
