gdb and binutils branch master updated. 2b0f535a446c682c3dc7c1276e2cbc747bfae163

[brobecke at sourceware dot org]

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commit 2b0f535a446c682c3dc7c1276e2cbc747bfae163
Author: Joel Brobecker <brobecker@adacore.com>
Date:   Tue Oct 7 02:22:21 2014 +0200

    [Ada] gdb.ada/complete.exp failure on x86_64-windows
    
    Using the example in gdb.ada/complete.exp, the following command
    on x86_64-windows returns one unwanted completion choice :
    
        (gdb) complete p pck
        p <pck_E>>
        [all following completions entries snipped, all expected]
    
    I tracked down this suprising entry to a minimal symbol whose name
    is ".refptr.pck_E". The problem occurs while trying to see if
    this symbol matches "pck" when doing wild-matching as we are doing
    here:
    
      /* Second: Try wild matching...  */
    
      if (!match && wild_match_p)
        {
          /* Since we are doing wild matching, this means that TEXT
             may represent an unqualified symbol name.  We therefore must
             also compare TEXT against the unqualified name of the symbol.  */
          sym_name = ada_unqualified_name (ada_decode (sym_name));
          if (strncmp (sym_name, text, text_len) == 0)
            match = 1;
        }
    
    What happens is that ada_decode correctly identifies the fact that
    SYM_NAME (".refptr.pck_E") is not following any GNAT encoding, and
    therefore returns that same name, but bracketed: "<.refptr.pck_E>".
    This is the convention we use for telling GDB that the decoded name
    is not a real Ada name - and therefore should not be encoded for
    operations such as name matching, symbol lookups, etc. So far, so good.
    
    Next is the call to ada_unqualified_name, which unfortunately does
    not notice that the decoded name it is being given isn't a natural
    symbol, and just blindly strips everything up to the last do, returning
    "pck_E>". And of course, "pck_E>" matches "pck" now, and so we end
    up accepting this symbol as a match.
    
    This patch fixes the problem by making ada_unqualified_name a little
    smarter by making sure that the given decoded symbol name does not
    start with '<'.
    
    gdb/ChangeLog:
    
            * ada-lang.c (ada_unqualified_name): Return DECODED_NAME if
            it starts with '<'.
    
    Tested on x86_64-windows using AdaCore's testsuite as well as
    on x86_64-linux.

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

Summary of changes:
 gdb/ChangeLog  |    5 +++++
 gdb/ada-lang.c |   12 ++++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)


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