[Bug gdb/9996] New: wrong size of wide strings

[Bug gdb/9996] New: wrong size of wide strings

[pedro at codesourcery dot com]

On cygwin, with the new charset support, I get this:

 (top-gdb) whatis L""
 type = wchar_t [1]

 (top-gdb) ptype wchar_t
 type = short unsigned int

This is correct.  wchar_t is 16-bit on Windows.

 (top-gdb) ptype L""
 type = short unsigned int [1]
 (top-gdb) ptype L"a"
 type = short unsigned int [3]
 (top-gdb) ptype L"aa"
 type = short unsigned int [5]
 (top-gdb) ptype L"aaa"
 type = short unsigned int [7]
 (top-gdb) ptype L"aaaa"
 type = short unsigned int [9]

Notice how the size of the array grows 1,3,5,7,9,...

GDB was linked with the real iconv.

On x86_64-linux, I get:

 (top-gdb) ptype L""
 type = int [1]
 (top-gdb) ptype L"a"
 type = int [2]
 (top-gdb) ptype L"aa"
 type = int [3]
 (top-gdb) ptype L"aaa"
 type = int [4]
 (top-gdb) ptype L"aaaa"
 type = int [5]

-- 
           Summary: wrong size of wide strings
           Product: gdb
           Version: 6.50
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: pedro at codesourcery dot com
                CC: gdb-prs at sourceware dot org
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin


http://sourceware.org/bugzilla/show_bug.cgi?id=9996

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[Bug gdb/9996] wrong size of wide strings

[tromey at redhat dot com]

------- Additional Comments From tromey at redhat dot com  2009-03-24 17:17 -------
Mine.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at sourceware dot|tromey at redhat dot com
                   |org                         |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-03-24 17:17:36
               date|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=9996

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[Bug gdb/9996] wrong size of wide strings

[tromey at redhat dot com]

------- Additional Comments From tromey at redhat dot com  2009-03-25 15:22 -------
I think we tracked this down to a bad setting for target-wide-charset.
If you set this to UCS-2, it should work.

I'm leaving this open for the time being because I want to write
some additional documentation about this.


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=9996

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[Bug gdb/9996] wrong size of wide strings

[pedro at codesourcery dot com]

------- Additional Comments From pedro at codesourcery dot com  2009-03-25 15:29 -------
Does it ever make sense to set target-wide-charset to UCS-4, when wchar_t is
16-bit, or UCS-2 when wchar_t is 32-bit?

Maybe we could have a more reasonable "auto" target-wide-charset
setting, that defaulted to ucs-2, or ucs-4, depending on wchar_t
width?


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=9996

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[Bug gdb/9996] wrong size of wide strings

[pebolle at tiscali dot nl]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pebolle at tiscali dot nl


http://sourceware.org/bugzilla/show_bug.cgi?id=9996

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