https://sourceware.org/bugzilla/show_bug.cgi?id=30768
Bug ID: 30768
Summary: X86: copy relocation against non-copyable protected
symbol
Product: binutils
Version: 2.40
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: xiezhiheng at huawei dot com
Target Milestone: ---
Hi,
I recently met a link error when I built glibc-2.38 with binutils 2.40. The
error is
[ 1568s] /usr/bin/ld:
/home/abuild/rpmbuild/BUILD/glibc-2.38/build-x86_64-openEuler-linux/elf/vismain.o:
copy relocation against non-copyable protected symbol `protvaritcpt' in
/home/abuild/rpmbuild/BUILD/glibc-2.38/build-x86_64-openEuler-linux/elf/vismod1.so
[ 1568s] collect2: error: ld returned 1 exit status
[ 1568s] make[2]: *** [../Rules:276:
/home/abuild/rpmbuild/BUILD/glibc-2.38/build-x86_64-openEuler-linux/elf/vismain]
Error 1
[ 1568s] make[2]: Leaving directory
'/home/abuild/rpmbuild/BUILD/glibc-2.38/elf'
[ 1568s] make[2]: Entering directory
'/home/abuild/rpmbuild/BUILD/glibc-2.38/elf'
(Complete log at
https://build.openeuler.openatom.cn/public/build/openEuler:23.09/standard_x86_64/x86_64/glibc/_log)
It is okay before I update binutils 2.37 to binutils 2.40.
I find that the error message is introduced by
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=ebb191adac4ab45498dec0bfaac62f0a33537ba4
since binutils 2.38 to disallow copy relocation against the non-copyable
protected symbol.
But the symbols are defined in glibc with
const char *protvaritcpt = __FILE__;
asm (".protected protvaritcpt");
I'm not sure if it is a compatibility issue between glibc-2.38 and binutils
2.40, and one of them need to be adapted in some way.
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