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Date: Thu, 16 Dec 2010 15:28:00 -0000
From: "Maciej W. Rozycki" <macro@codesourcery.com>
To: "Joseph S. Myers" <joseph@codesourcery.com>
cc: Richard Sandiford <rdsandiford@googlemail.com>,     Ilie Garbacea <ilie@mips.com>, binutils@sourceware.org,     Chao-ying Fu <fu@mips.com>, Rich Fuhler <rich@mips.com>,     David Lau <davidlau@mips.com>, Kevin Mills <kevinm@mips.com>,     Catherine Moore <clm@codesourcery.com>,     Nathan Sidwell <nathan@codesourcery.com>,     Nathan Froyd <froydnj@codesourcery.com>
Subject: Re: [PATCH] MIPS: microMIPS ASE support
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On Tue, 14 Dec 2010, Joseph S. Myers wrote:

> >  Joseph, I reckon you were involved with this piece -- did I get all the 
> > context right here?
> 
> Yes.  A call to an undefined weak function is equally valid at compile and 
> link time and invalid at execution time if executed whether or not the 
> code is compiled in such a way as to support cross-mode jumps.  Such a 
> call is a call to an undefined function, never a call to an other-mode 
> function, and so the linker should never give errors for cases such as 
> JALS where it cannot convert to a cross-mode jump.  The original observed 
> problem case was statically linking sln with a call to 
> __nptl_deallocate_tsd that never gets executed in single-threaded 
> programs.

 OK, thanks for confirmation.

  Maciej