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[Bug ld/26530] New: Inconsistency in between bfd and gold about -Wl,--as
From: |
mliska at suse dot cz |
Subject: |
[Bug ld/26530] New: Inconsistency in between bfd and gold about -Wl,--as-needed |
Date: |
Tue, 25 Aug 2020 07:26:48 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=26530
Bug ID: 26530
Summary: Inconsistency in between bfd and gold about
-Wl,--as-needed
Product: binutils
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: mliska at suse dot cz
Target Milestone: ---
Let's consider the following example:
$ cat foo.c
const char *lrealpath(const char *a)
{
return a;
}
$ cat main.c
const char *lrealpath(const char *a);
int main(int argc, char **argv)
{
lrealpath (argv[0]);
}
$ gcc foo.c -fPIC -flto -c
$ ar r libtest.a foo.o
$ gcc -o libfoo.so foo.o -shared
$ gcc main.o -Wl,--as-needed libfoo.so libtest.a --save-temps -fuse-ld=bfd -L.
&& cat libtest.res
2
main.o 2
200 6e870bd31e7efa23 PREVAILING_DEF main
206 6e870bd31e7efa23 RESOLVED_IR lrealpath
libtest.a@0x92 1
199 76b392265247fa61 PREVAILING_DEF_IRONLY_EXP lrealpath
while gold does:
$ gcc main.o -Wl,--as-needed libfoo.so libtest.a --save-temps -fuse-ld=gold -L.
&& cat libtest.res
1
main.o 2
200 6e870bd31e7efa23 PREVAILING_DEF main
206 6e870bd31e7efa23 RESOLVED_DYN lrealpath
So BFD takes symbols from LTO IR while GOLD takes them from the shared library.
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- [Bug ld/26530] New: Inconsistency in between bfd and gold about -Wl,--as-needed,
mliska at suse dot cz <=
- [Bug ld/26530] Inconsistency in between bfd and gold about -Wl,--as-needed, mliska at suse dot cz, 2020/08/25
- [Bug ld/26530] Inconsistency in between bfd and gold about -Wl,--as-needed, matz at suse dot de, 2020/08/25
- [Bug ld/26530] Inconsistency in between bfd and gold about -Wl,--as-needed, hjl.tools at gmail dot com, 2020/08/25
- [Bug ld/26530] Inconsistency in between bfd and gold about -Wl,--as-needed, hjl.tools at gmail dot com, 2020/08/25
- [Bug ld/26530] Inconsistency in between bfd and gold about -Wl,--as-needed, hjl.tools at gmail dot com, 2020/08/25