https://sourceware.org/bugzilla/show_bug.cgi?id=33209
Bug ID: 33209
Summary: Additional GLIBC_2.36 reference in glibc built objects
with binutils 2.45
Product: binutils
Version: 2.45
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
1. Build binutils master branch, and install locally.
2. Build glibc master branch with binutils build from step 1.
3. Inspect nptl_db/libthread_db.so.1 and notice the following:
(a) It has a GLIBC_2.36 reference.
Version needs section '.gnu.version_r' contains 1 entry:
Addr: 0x0000000000001030 Offset: 0x00001030 Link: 5 (.dynstr)
000000: Version: 1 File: libc.so.6 Cnt: 2
0x0010: Name: GLIBC_2.36 Flags: none Version: 6
0x0020: Name: GLIBC_2.2.5 Flags: none Version: 5
(b) None of the objects involved in the link referenced any symbols from
GLIBC_2.36.
(c) Walking the list of all objects used in the link shows none of them have
GLIBC_2.36 references.
I can't find any reference to GLIBC_2.36.
This spruious GLIBC_2.36 reference also shows up in:
* locale/libBrokenLocale.so.1
Version needs section '.gnu.version_r' contains 1 entry:
Addr: 0x0000000000000570 Offset: 0x00000570 Link: 5 (.dynstr)
000000: Version: 1 File: libc.so.6 Cnt: 3
0x0010: Name: GLIBC_2.36 Flags: none Version: 5
0x0020: Name: GLIBC_ABI_DT_RELR Flags: none Version: 4
0x0030: Name: GLIBC_2.2.5 Flags: none Version: 3
* Iconv converters e.g. iconvdata/UTF-16.so
Version needs section '.gnu.version_r' contains 1 entry:
Addr: 0x0000000000000628 Offset: 0x00000628 Link: 5 (.dynstr)
000000: Version: 1 File: libc.so.6 Cnt: 4
0x0010: Name: GLIBC_2.36 Flags: none Version: 5
0x0020: Name: GLIBC_ABI_DT_RELR Flags: none Version: 4
0x0030: Name: GLIBC_PRIVATE Flags: none Version: 3
0x0040: Name: GLIBC_2.2.5 Flags: none Version: 2
In discussing this with Nick Clifton he noted that removing `-Wl,-z,mark-plt`
removes the GLIBC_2.36 reference.
Next steps would be to review why that option makes a difference here.
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