https://sourceware.org/bugzilla/show_bug.cgi?id=16477
Bug ID: 16477
Summary: ld fails with internal error in
elf_x86_64_relocate_section with .gnu.warning.<symbol>
section
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: zbyszek at in dot waw.pl
This is a continuation of pr16467, but a different failure.
Tests below are performed with binutils git from 20/01/2014 with patch from
pr16467 on top.
I'm trying to generate a warning when linking against the obsolete library,
following
http://ninjalj.blogspot.com/2011/11/your-own-linker-warnings-using-gnu.html.
$ tail liba.c liba.sym libb.c libb.sym linkwarning.h test1.c
==> liba.c <==
const char* sd_get_seats(void) {return "bla bla";}
==> liba.sym <==
LIBSYSTEMD_209 {
global:
sd_get_seats;
};
==> libb.c <==
#include "linkwarning.h"
void new_sd_get_seats(void);
__asm__(".symver new_sd_get_seats,sd_get_seats@LIBSYSTEMD_209");
static void (*resolve_sd_get_seats(void)) (void) {
return new_sd_get_seats;
}
void sd_get_seats(void) __attribute__((ifunc("resolve_sd_get_seats")));
link_warning(sd_get_seats, "sd_get_seats is obsolete"); #<-- this is
new
==> libb.sym <==
LIBSYSTEMD_208 {
global:
sd_get_seats;
};
==> linkwarning.h <==
#define link_warning(symbol, msg) \
static const char __evoke_link_warning_##symbol[] \
__attribute__ ((used, section (".gnu.warning." #symbol))) \
= msg
==> test1.c <==
#include <stdio.h>
const char* sd_get_seats(void);
int main(int argc, char **argv) {
printf("%s\n", sd_get_seats());
return 0;
}
$ gcc -shared -o liba.so liba.c -fPIC -Wl,--version-script=liba.sym
-Wl,-fuse-ld=bfd
$ gcc -shared -o libb.so libb.c -fPIC -L. -la -Wl,--version-script=libb.sym
-Wl,-fuse-ld=bfd
/usr/bin/ld.bfd: BFD (GNU Binutils) 2.24.51.20140120 internal error, aborting
at elf64-x86-64.c line 3364 in elf_x86_64_relocate_section
/usr/bin/ld.bfd: Please report this bug.
collect2: error: ld returned 1 exit status
With gold:
$ gcc -shared -o liba.so liba.c -fPIC -Wl,--version-script=liba.sym
-Wl,-fuse-ld=gold
$ gcc -shared -o libb.so libb.c -fPIC -L. -la -Wl,--version-script=libb.sym
-Wl,-fuse-ld=gold
$ LD_LIBRARY_PATH=. gcc -L. -lb test1.c -o test1 -Wl,-fuse-ld=gold
/tmp/ccwEa1hI.o:test1.c:function main: warning: sd_get_seats is obsolete
$ LD_LIBRARY_PATH=. ./test1
bla bla
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