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[Bug gas/28157] New: gas: .symver *, *@*, remove cannot be used in reloc


From: i at maskray dot me
Subject: [Bug gas/28157] New: gas: .symver *, *@*, remove cannot be used in relocation
Date: Sat, 31 Jul 2021 20:07:40 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=28157

            Bug ID: 28157
           Summary: gas: .symver *, *@*, remove cannot be used in
                    relocation
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: i at maskray dot me
  Target Milestone: ---

PR 25295 added the new syntax `, remove` to `.symver`.

However, the new syntax cannot be used in relocations. This makes it difficult
to use:

% cat ctype_info.s
        .symver __ctype_b,__ctype_b@GLIBC_2.2.5, remove

# These directives work
        .data
        .globl  __ctype_b
        .type   __ctype_b, @object
        .size   __ctype_b, 8

__ctype_b:
# Error: redefined symbol cannot be used on reloc
        .quad   __ctype_b

% as ctype_info.s       
ctype_info.s: Assembler messages:
ctype_info.s:11: Error: redefined symbol cannot be used on reloc


Personally I think `.symver a, b@ver, remove` should behave like "rename a to
b@ver". All relocations should be relative the versioned b@ver instead of a.

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