[Bug libc/21666] New: .symver is used on common symbol

["hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21666

            Bug ID: 21666
           Summary: .symver is used on common symbol
           Product: glibc
           Version: 2.26
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Glibc uses .symver is used on common symbol. But the .symver directive on
common symbol creates a new common symbol, not an alias:

https://sourceware.org/bugzilla/show_bug.cgi?id=21661

The fix assembler reports:

/tmp/cc8lsExU.s: Assembler messages:
/tmp/cc8lsExU.s: Error: symbol `loc1@GLIBC_2.2.5' can't be versioned to common
symbol
/tmp/cc8lsExU.s: Error: symbol `loc2@GLIBC_2.2.5' can't be versioned to common
symbol
/tmp/cc8lsExU.s: Error: symbol `locs@GLIBC_2.2.5' can't be versioned to common
symbol
../o-iterator.mk:9: recipe for target
'/export/build/gnu/glibc/build-x86_64-linux/misc/regexp.os' failed

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