kamm@ckamm-linux:~/dev/tmp/testapp$ gdb ./testapp 
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/kamm/dev/tmp/testapp/testapp...done.
(gdb) run
Starting program: /home/kamm/dev/tmp/testapp/testapp 
[Thread debugging using libthread_db enabled]
ASSERT: "i >= 0 && i < size()" in file ../../include/QtCore/../../../47/src/corelib/tools/qstring.h, line 701

Program received signal SIGABRT, Aborted.
0x00007ffff5b3aa75 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
        in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb) bt
#0  0x00007ffff5b3aa75 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff5b3e5c0 in *__GI_abort () at abort.c:92
#2  0x00007ffff68eaa40 in qt_message_output (msgType=QtFatalMsg, 
    buf=0x60a6b8 "ASSERT: \"i >= 0 && i < size()\" in file ../../include/QtCore/../../../47/src/corelib/tools/qstring.h, line 701") at /home/kamm/dev/qt/47/src/corelib/global/qglobal.cpp:2271
#3  0x00007ffff68eac42 in qt_message (msgType=QtFatalMsg, msg=0x7ffff6ab5cf8 "ASSERT: \"%s\" in file %s, line %d", 
    ap=0x7fffffffdc40) at /home/kamm/dev/qt/47/src/corelib/global/qglobal.cpp:2317
#4  0x00007ffff68eb3f7 in qFatal (msg=0x7ffff6ab5cf8 "ASSERT: \"%s\" in file %s, line %d")
    at /home/kamm/dev/qt/47/src/corelib/global/qglobal.cpp:2500
#5  0x00007ffff68ea5a7 in qt_assert (assertion=0x7ffff6ab8575 "i >= 0 && i < size()", 
    file=0x7ffff6ab8538 "../../include/QtCore/../../../47/src/corelib/tools/qstring.h", line=701)
    at /home/kamm/dev/qt/47/src/corelib/global/qglobal.cpp:2016
#6  0x00007ffff6916052 in QString::at (this=0x7fffffffdd90, i=0)
    at ../../include/QtCore/../../../47/src/corelib/tools/qstring.h:701
#7  0x00007ffff694c40e in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
#8  0x00007ffff2f03c96 in QString::operator+= (this=0x7fffffffdf20, c=-104 '\230')
    at ../../../../include/QtCore/../../../47/src/corelib/tools/qstring.h:452
#9  0x00007ffff2f02020 in QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, 
    state=0x0) at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:359
#10 0x0000000000403796 in QTextCodec::toUnicode (this=0x7304d0, in=0x404e68 "鸿鹄安知燕雀之志", length=24, 
    state=0x0) at ../../qt/47-build/include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:116
#11 0x0000000000403621 in main (argc=1, argv=0x7fffffffe038) at main.cpp:9
(gdb) frame 7
#7  0x00007ffff694c40e in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
(gdb) frame 10
#10 0x0000000000403796 in QTextCodec::toUnicode (this=0x7304d0, in=0x404e68 "鸿鹄安知燕雀之志", length=24, 
    state=0x0) at ../../qt/47-build/include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:116
116             { return convertToUnicode(in, length, state); }
(gdb) frame 9
#9  0x00007ffff2f02020 in QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, 
    state=0x0) at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:359
359                         result += qValidChar(u);
(gdb) l
354                 if (Is2ndByteIn2Bytes(ch)) {
355                     buf[1] = ch;
356                     int clen = 2;
357                     uint u = qt_Gb18030ToUnicode(buf, clen);
358                     if (clen == 2) {
359                         result += qValidChar(u);
360                     } else {
361                         result += replacement;
362                         ++invalid;
363                     }
(gdb) frame 7
#7  0x00007ffff694c40e in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
(gdb) p QTextCodec::codecFor
codecForCStrings()                               codecForName(QByteArray const&)
codecForHtml(QByteArray const&)                  codecForName(QByteArray const&)::cache
codecForHtml(QByteArray const&, QTextCodec*)     codecForName(char const*)
codecForLocale()                                 codecForTr()
codecForMib(int)                                 codecForUtfText(QByteArray const&)
codecForMib(int)::cache                          codecForUtfText(QByteArray const&, QTextCodec*)
(gdb) p QTextCodec::codecForCStrings()
$1 = (QTextCodec *) 0x7304d0
(gdb) frame 11
#11 0x0000000000403621 in main (argc=1, argv=0x7fffffffe038) at main.cpp:9
9           tc->toUnicode(str, qstrlen(str));
(gdb) p tc
$2 = (struct QTextCodec *) 0x7304d0
(gdb) p c
$3 = {i = {0, 1072693248}, d = 1}
(gdb) f
#11 0x0000000000403621 in main (argc=1, argv=0x7fffffffe038) at main.cpp:9
9           tc->toUnicode(str, qstrlen(str));
(gdb) frame 7
#7  0x00007ffff694c40e in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
(gdb) p c
$4 = -104 '\230'
(gdb) p *(&c+1)
$5 = 127 '\177'
(gdb) frame 6
#6  0x00007ffff6916052 in QString::at (this=0x7fffffffdd90, i=0)
    at ../../include/QtCore/../../../47/src/corelib/tools/qstring.h:701
701     { Q_ASSERT(i >= 0 && i < size()); return d->data[i]; }
(gdb) p size()
$6 = 0
(gdb) frame 11
#11 0x0000000000403621 in main (argc=1, argv=0x7fffffffe038) at main.cpp:9
9           tc->toUnicode(str, qstrlen(str));
(gdb) p str
$7 = 0x404e68 "鸿鹄安知燕雀之志"
(gdb) p *str
$8 = -23 '\351'
(gdb) p *(str+1)
$9 = -72 '\270'
(gdb) p *(str+2)
$10 = -65 '\277'
(gdb) p *(str+3)
$11 = -23 '\351'
(gdb) p *(str+4)
$12 = -71 '\271'
(gdb) p *(str+5)
$13 = -124 '\204'
(gdb) p *(str+6)
$14 = -27 '\345'
(gdb) p *(str+7)
$15 = -82 '\256'
(gdb) p *(str+8)
$16 = -119 '\211'
(gdb) p *(str+9)
$17 = -25 '\347'
(gdb) p *(str+10)
$18 = -97 '\237'
(gdb) p *(str+11)
$19 = -91 '\245'
(gdb) p *(str+12)
$20 = -25 '\347'
(gdb) p *(str+13)
$21 = -121 '\207'
(gdb) p *(str+14)
$22 = -107 '\225'
(gdb) p *(str+15)
$23 = -23 '\351'
(gdb) p *(str+16)
$24 = -101 '\233'
(gdb) p *(str+17)
$25 = -128 '\200'
(gdb) p *(str+18)
$26 = -28 '\344'
(gdb) p *(str+19)
$27 = -71 '\271'
(gdb) p *(str+20)
$28 = -117 '\213'
(gdb) p *(str+21)
$29 = -27 '\345'
(gdb) p *(str+22)
$30 = -65 '\277'
(gdb) p *(str+23)
$31 = -105 '\227'
(gdb) p *(str+24)
$32 = 0 '\000'
(gdb) frame 9
#9  0x00007ffff2f02020 in QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, 
    state=0x0) at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:359
359                         result += qValidChar(u);
(gdb) l
354                 if (Is2ndByteIn2Bytes(ch)) {
355                     buf[1] = ch;
356                     int clen = 2;
357                     uint u = qt_Gb18030ToUnicode(buf, clen);
358                     if (clen == 2) {
359                         result += qValidChar(u);
360                     } else {
361                         result += replacement;
362                         ++invalid;
363                     }
(gdb) l -
344                     buf[0] = ch;
345                     nbuf = 1;
346                 } else {
347                     // Invalid
348                     result += replacement;
349                     ++invalid;
350                 }
351                 break;
352             case 1:
353                 // GBK 2nd byte
(gdb) 
334         //qDebug("QGbkDecoder::toUnicode(const char* chars = \"%s\", int len = %d)", chars, len);
335         for (int i=0; i<len; i++) {
336             uchar ch = chars[i];
337             switch (nbuf) {
338             case 0:
339                 if (ch < 0x80) {
340                     // ASCII
341                     result += QLatin1Char(ch);
342                 } else if (Is1stByte(ch)) {
343                     // GBK 1st byte?
(gdb) b 336
Breakpoint 1 at 0x7ffff2f01f1c: file /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp, line 336.
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/kamm/dev/tmp/testapp/testapp 
[Thread debugging using libthread_db enabled]

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) p len
$33 = 24
(gdb) p i
$34 = 0
(gdb) cont
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "f", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "W\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "\230\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7ffff6ab5cf8 "ASSERT: \"%s\" in file %s, line %d", 
    len=9, state=0x0) at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/kamm/dev/tmp/testapp/testapp 
[Thread debugging using libthread_db enabled]

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) cont
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "f", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "W\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) 
Continuing.

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x404e68 "鸿鹄安知燕雀之志", len=24, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) p i
$35 = 5
(gdb) l
331
332         QString result;
333
334         //qDebug("QGbkDecoder::toUnicode(const char* chars = \"%s\", int len = %d)", chars, len);
335         for (int i=0; i<len; i++) {
336             uchar ch = chars[i];
337             switch (nbuf) {
338             case 0:
339                 if (ch < 0x80) {
340                     // ASCII
(gdb) p result
$36 = {static null = {<No data fields>}, static shared_null = {ref = {_q_value = 25}, alloc = 0, size = 0, 
    data = 0x60637a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
      0}}, static shared_empty = {ref = {_q_value = 1}, alloc = 0, size = 0, data = 0x7ffff6dc539a, clean = 0, 
    simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0x0, 
  static codecForCStrings = 0x7304d0}
(gdb) n
337             switch (nbuf) {
(gdb) 
354                 if (Is2ndByteIn2Bytes(ch)) {
(gdb) 
355                     buf[1] = ch;
(gdb) 
356                     int clen = 2;
(gdb) 
357                     uint u = qt_Gb18030ToUnicode(buf, clen);
(gdb) 
358                     if (clen == 2) {
(gdb) 
359                         result += qValidChar(u);
(gdb) p u
$37 = 31640
(gdb) p buf
$38 = "\271\204"
(gdb) s
QString::operator+= (this=0x7fffffffdf20, c=-104 '\230')
    at ../../../../include/QtCore/../../../47/src/corelib/tools/qstring.h:452
452         { return append(QChar::fromAscii(c)); }
(gdb) s
QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1323
1323        if (QTextCodec::codecForCStrings())
(gdb) n
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
(gdb) s
QTextCodec::codecForCStrings () at ../../include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:157
157     inline QTextCodec* QTextCodec::codecForCStrings() { return validCodecs() ? QString::codecForCStrings : 0; }
(gdb) fin
Run till exit from #0  QTextCodec::codecForCStrings ()
    at ../../include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:157
0x00007ffff694c3dc in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
Value returned is $39 = (struct QTextCodec *) 0x7304d0
(gdb) s
QTextCodec::toUnicode (this=0x7304d0, in=0x7fffffffdd8c "\230\177", length=1, state=0x0)
    at ../../include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:116
116             { return convertToUnicode(in, length, state); }
(gdb) p in
$40 = 0x7fffffffdd8c "\230\177"
(gdb) p length
$41 = 1
(gdb) p state
$42 = (QTextCodec::ConverterState *) 0x0
(gdb) s
QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "\230\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:321
321         int nbuf = 0;
(gdb) n
322         QChar replacement = QChar::ReplacementCharacter;
(gdb) l
317
318     QString QGbkCodec::convertToUnicode(const char* chars, int len, ConverterState *state) const
319     {
320         uchar buf[2];
321         int nbuf = 0;
322         QChar replacement = QChar::ReplacementCharacter;
323         if (state) {
324             if (state->flags & ConvertInvalidToNull)
325                 replacement = QChar::Null;
326             nbuf = state->remainingChars;
(gdb) l
327             buf[0] = state->state_data[0];
328             buf[1] = state->state_data[1];
329         }
330         int invalid = 0;
331
332         QString result;
333
334         //qDebug("QGbkDecoder::toUnicode(const char* chars = \"%s\", int len = %d)", chars, len);
335         for (int i=0; i<len; i++) {
336             uchar ch = chars[i];
(gdb) n
323         if (state) {
(gdb) 
330         int invalid = 0;
(gdb) 
332         QString result;
(gdb) 
335         for (int i=0; i<len; i++) {
(gdb) 

Breakpoint 1, QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "\230\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:336
336             uchar ch = chars[i];
(gdb) n
337             switch (nbuf) {
(gdb) p ch
$43 = 152 '\230'
(gdb) n
339                 if (ch < 0x80) {
(gdb) 
342                 } else if (Is1stByte(ch)) {
(gdb) 
344                     buf[0] = ch;
(gdb) 
345                     nbuf = 1;
(gdb) 
342                 } else if (Is1stByte(ch)) {
(gdb) 
351                 break;
(gdb) 
335         for (int i=0; i<len; i++) {
(gdb) 
375         if (state) {
(gdb) 
379             state->invalidChars += invalid;
(gdb) 
382     }
(gdb) l
377             state->state_data[0] = buf[0];
378             state->state_data[1] = buf[1];
379             state->invalidChars += invalid;
380         }
381         return result;
382     }
383
384     QByteArray QGbkCodec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const
385     {
386         char replacement = '?';
(gdb) p state
$44 = (QTextCodec::ConverterState *) 0x0
(gdb) p result
DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece.
(gdb) fin
Run till exit from #0  QGbkCodec::convertToUnicode (this=0x7304d0, chars=0x7fffffffdd8c "\230\177", len=1, state=0x0)
    at /home/kamm/dev/qt/47/src/plugins/codecs/cn/qgb18030codec.cpp:382
0x00007ffff695d564 in QTextCodec::toUnicode (this=0x7304d0, in=0x7fffffffdd8c "\230\177", length=1, state=0x0)
    at ../../include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:116
116             { return convertToUnicode(in, length, state); }
Value returned is $45 = 
  {static null = {<No data fields>}, static shared_null = {ref = {_q_value = 26}, alloc = 0, size = 0, data = 0x60637a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 1}, alloc = 0, size = 0, data = 0x7ffff6dc539a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0x7fffffffdd90, static codecForCStrings = 0x7304d0}
(gdb) fin
Run till exit from #0  0x00007ffff695d564 in QTextCodec::toUnicode (this=0x7304d0, in=0x7fffffffdd8c "\230\177", 
    length=1, state=0x0) at ../../include/QtCore/../../../47/src/corelib/codecs/qtextcodec.h:116
0x00007ffff694c3fd in QChar::fromAscii (c=-104 '\230') at /home/kamm/dev/qt/47/src/corelib/tools/qchar.cpp:1325
1325            return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
Value returned is $46 = 
  {static null = {<No data fields>}, static shared_null = {ref = {_q_value = 26}, alloc = 0, size = 0, data = 0x60637a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 1}, alloc = 0, size = 0, data = 0x7ffff6dc539a, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0x7fffffffdd90, static codecForCStrings = 0x7304d0}
(gdb) s
QString::at (this=0x7fffffffdd90, i=0) at ../../include/QtCore/../../../47/src/corelib/tools/qstring.h:701
701     { Q_ASSERT(i >= 0 && i < size()); return d->data[i]; }
(gdb) p size()
warning: can't find linker symbol for virtual table for `QString' value
warning:   found `typeinfo for QMainWindow' instead
$47 = 0
(gdb) quit