[Bug gdb/12733] New: Reading memory from target omits the first byte

[Bug gdb/12733] New: Reading memory from target omits the first byte

[fyzmat at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12733

           Summary: Reading memory from target omits the first byte
           Product: gdb
           Version: 7.2
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: fyzmat@gmail.com


Created attachment 5706
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5706
Place of the bug and fix

Hello,

I found out that gdb omits the first byte of memory in a special case. If the
reading of large amount of memory fails, the gdb tries to read just one byte at
first and then it reads smaller pieces of memory. In this case the first read
byte is omitted.

I have done some investigation of this behaviour and a probable bug in function
target_read_until_error in file target.c. I am attaching my fix.

Regards,
Tomas

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[Bug gdb/12733] Reading memory from target omits the first byte

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12733

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING
                 CC|                            |tromey at redhat dot com

--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2011-11-07 21:13:18 UTC ---
The code here seems to have changed.
I don't see target_read_until_error in target.c any more.
Can you try 7.3 or CVS HEAD and see if you still have the problem?

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[Bug gdb/12733] Reading memory from target omits the first byte

[fyzmat at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12733

fyzmat at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |FIXED

--- Comment #2 from fyzmat at gmail dot com 2012-01-15 17:11:38 UTC ---
Today I tried the official version of GDB 7.3.1. The problem seems to be fixed
in that version.

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