[Bug stdio/31776] New: __nldbl__IO_vfscanf should be a compat symbol

[Bug stdio/31776] New: __nldbl__IO_vfscanf should be a compat symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

            Bug ID: 31776
           Summary: __nldbl__IO_vfscanf should be a compat symbol
           Product: glibc
           Version: 2.40
            Status: NEW
          Severity: normal
          Priority: P2
         Component: stdio
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: alpha

libc.so has:

  2002: 00000000001adf20    92 FUNC    GLOBAL DEFAULT [STD GPLOAD]    11
__nldbl__IO_vfscanf@@GLIBC_2.4

__nldbl__IO_vfscanf should be a compat symbol.

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|alpha                       |
               Host|                            |alpha-*-*

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Are you sure? Doesn't alpha have libnldbl.a? I think we would have to build
that differently if it's expected to work with compat symbols.

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
math/libnldbl_nonshared.a references __nldbl__IO_vfscanf.

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|NOTABUG                     |---

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
There are

#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_29)
int
attribute_compat_text_section
__nldbl__IO_vfscanf (FILE *s, const char *fmt, va_list ap, int *errp)
{
  int ret = __vfscanf_internal (s, fmt, ap, SCANF_LDBL_IS_DBL);
  if (__glibc_unlikely (errp != 0))
    *errp = (ret == -1); 
  return ret; 
}
#endif

and

But __nldbl__IO_vfscanf isn't marked as a compat symbol and there are
references
to __nldbl__IO_vfscanf in libnldbl_nonshared.a.

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEW

--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
As discussed on libc-alpha, libnldbl_nonshared.a should use
__nldbl___isoc99_vfscanf (vfscanf wasn't part of C89).

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
I think __nldbl__IO_vfscanf should always be defined:

https://patchwork.sourceware.org/project/glibc/list/?series=34326

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[Bug stdio/31776] __nldbl__IO_vfscanf should be a compat symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31776

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #5)
> I think __nldbl__IO_vfscanf should always be defined:
> 
> https://patchwork.sourceware.org/project/glibc/list/?series=34326

__nldbl__IO_vfscanf should be a compat symbol:

https://patchwork.sourceware.org/project/glibc/list/?series=34338

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