gdb and binutils branch master updated. 0837c976950e347cc48a1c55c6c8d60fc710c168

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0837c976950e347cc48a1c55c6c8d60fc710c168

commit 0837c976950e347cc48a1c55c6c8d60fc710c168
Author: Yuanhui Zhang <asmwarrior@gmail.com>
Date:   Mon Feb 24 15:22:10 2014 +0800

    Fix a GDB assert failure on windows
    
    A GDB internal error is found on native mingw32 target.
    
    (gdb) run
    ../../binutils-gdb/gdb/target.c:1483: internal-error:
    target_xfer_partial: Assertion `*xfered_len > 0' failed.
    A problem internal to GDB has been detected,
    further debugging may prove unreliable.
    Quit this debugging session? (y or n)
    
    This error was introduced by the following snippet in commit
    9b409511d07fe375284701af34909fb539029caf
    
    > @@ -2536,27 +2538,30 @@ windows_xfer_shared_libraries (struct target_ops *ops,
    >      }
    >
    >    obstack_free (&obstack, NULL);
    > -  return len;
    > +  *xfered_len = (ULONGEST) len;
    > +  return TARGET_XFER_OK;
    >  }
    
    In the original code, len is returned, which could be 0, but after that
    commit, only TARGET_XFER_OK is returned, which is wrong.  If len is 0,
    TARGET_XFER_EOF should be returned.  (it is 0 in enum
    target_xfer_status declaration).
    
    gdb:
    
    2014-02-24  Yuanhui Zhang  <asmwarrior@gmail.com>
    
    	* windows-nat.c (windows_xfer_shared_libraries): Return
    	TARGET_XFER_EOF if LEN is zero to fix an assert failure when
    	requested object is TARGET_OBJECT_LIBRARIES.

-----------------------------------------------------------------------

Summary of changes:
 gdb/ChangeLog     |    6 ++++++
 gdb/windows-nat.c |    2 +-
 2 files changed, 7 insertions(+), 1 deletions(-)


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