[Bug c++/15801] some C++11 symbols can't be demangled

["b.r.longbons at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15801

--- Comment #3 from Ben Longbons <b.r.longbons at gmail dot com> ---
Created attachment 7127
  --> http://sourceware.org/bugzilla/attachment.cgi?id=7127&action=edit
my original program, trimmed as much as possible without breaking types very
much

Some observations:
gcc 4.6 is best to test with, since it *only* emits the wrong symbols. With gcc
4.7 and gcc 4.8, this might be a heisenbug. clang only emits the right symbols
(but clang is still useless for compiling programs to be debugged).

puts() is there just to set a nice breakpoint.

The need to explicitly call 'set lang c++' before 'maint demangle' is *really*
annoying when using 'up' or 'frame' after a call to a C library.

Hm ... cosmetic issue, but perhaps gdb should not print the () if it
successfully demangles a name and it's not printing arguments

backtrace for gcc 4.6, attempting demangling:
(gdb) bt
#0  _IO_puts (str=0x4015ec "hello") at ioputs.c:34
#1  0x00000000004014ed in bool extract<(char)32, global_reg>(strings::XString,
VRecord<(char)32, global_reg>) ()
#2  0x0000000000401493 in bool extract<(char)9, 1, VRecord<(char)32,
global_reg>>(strings::XString, Record<(char)9, 1, VRecord<(char)32,
global_reg>>) ()
#3  0x0000000000401422 in extract<(char)9, 2, TimeT<VRecord<(char)32,
global_reg> >*> ()
#4  0x0000000000401391 in bool extract<(char)9, 3, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 3, strings::VString<(unsigned char)254>*, TimeT*,
VRecord<(char)32, global_reg> >) ()
#5  0x00000000004012e7 in extract<(char)9, 4,
IP_String<strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >*> ()
#6  0x0000000000401228 in extract<(char)9, 5, TimeT<IP_String*,
strings::VString<(unsigned char)254>*, IP_String, VRecord<(char)32, global_reg>
>*> ()
#7  0x000000000040115c in extract<(char)9, 6, timestamp_seconds_buffer<TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, IP_String, VRecord<(char)32,
global_reg> >*> ()
#8  0x0000000000401083 in extract<(char)9, 7,
AccountEmail<timestamp_seconds_buffer*, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, IP_String, VRecord<(char)32, global_reg>
>*> ()
#9  0x0000000000400fa7 in bool extract<(char)9, 8, int*, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 8, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#10 0x0000000000400eb8 in bool extract<(char)9, 9, int*, int*, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 9, int*, int*, AccountEmail*, timestamp_seconds_buffer*,
TimeT*, IP_String*, strings::VString<(unsigned char)254>*, TimeT*,
VRecord<(char)32, global_reg> >) ()
#11 0x0000000000400da8 in bool extract<(char)9, 10, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 10, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#12 0x0000000000400c86 in
_Z7extractILc9ELi11EP29timestamp_milliseconds_bufferIPN7strings7VStringILh1EEEPiS6_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS3_ILh254EEESC_7VRecordILc32E10global_regEEEbNS2_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#13 0x0000000000400b52 in
_Z7extractILc9ELi12EP12AccountCryptIP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiS8_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS5_ILh254EEESE_7VRecordILc32E10global_regEEEbNS4_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#14 0x0000000000400a0d in
_Z7extractILc9ELi13EP11AccountNameIP12AccountCryptP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiSA_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS7_ILh254EEESG_7VRecordILc32E10global_regEEEbNS6_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#15 0x00000000004008ac in bool extract<(char)9, 14, int*, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 14, int*, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#16 0x00000000004006fc in extract(strings::XString, AuthData*) ()
#17 0x000000000040073d in mmo_auth_init(strings::XString) ()
#18 0x0000000000400752 in main ()

backtrace for gcc 4.6, no demangling:
(gdb) bt
#0  _IO_puts (str=0x4015ec "hello") at ioputs.c:34
#1  0x00000000004014ed in
_Z7extractILc32E10global_regEbN7strings7XStringE7VRecordIXT_ET0_E ()
#2  0x0000000000401493 in
_Z7extractILc9ELi1E7VRecordILc32E10global_regEIEEbN7strings7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#3  0x0000000000401422 in
_Z7extractILc9ELi2EP5TimeTI7VRecordILc32E10global_regEEEbN7strings7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#4  0x0000000000401391 in
_Z7extractILc9ELi3EPN7strings7VStringILh254EEEIP5TimeT7VRecordILc32E10global_regEEEbNS0_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#5  0x00000000004012e7 in
_Z7extractILc9ELi4EP9IP_StringIPN7strings7VStringILh254EEEP5TimeT7VRecordILc32E10global_regEEEbNS2_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#6  0x0000000000401228 in
_Z7extractILc9ELi5EP5TimeTIP9IP_StringPN7strings7VStringILh254EEES1_7VRecordILc32E10global_regEEEbNS4_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#7  0x000000000040115c in
_Z7extractILc9ELi6EP24timestamp_seconds_bufferIP5TimeTP9IP_StringPN7strings7VStringILh254EEES3_7VRecordILc32E10global_regEEEbNS6_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#8  0x0000000000401083 in
_Z7extractILc9ELi7EP12AccountEmailIP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES5_7VRecordILc32E10global_regEEEbNS8_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#9  0x0000000000400fa7 in
_Z7extractILc9ELi8EPiIP12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES6_7VRecordILc32E10global_regEEEbNS9_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#10 0x0000000000400eb8 in
_Z7extractILc9ELi9EPiIS0_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES6_7VRecordILc32E10global_regEEEbNS9_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#11 0x0000000000400da8 in
_Z7extractILc9ELi10EPN7strings7VStringILh1EEEIPiS4_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS1_ILh254EEESA_7VRecordILc32E10global_regEEEbNS0_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#12 0x0000000000400c86 in
_Z7extractILc9ELi11EP29timestamp_milliseconds_bufferIPN7strings7VStringILh1EEEPiS6_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS3_ILh254EEESC_7VRecordILc32E10global_regEEEbNS2_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#13 0x0000000000400b52 in
_Z7extractILc9ELi12EP12AccountCryptIP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiS8_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS5_ILh254EEESE_7VRecordILc32E10global_regEEEbNS4_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#14 0x0000000000400a0d in
_Z7extractILc9ELi13EP11AccountNameIP12AccountCryptP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiSA_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS7_ILh254EEESG_7VRecordILc32E10global_regEEEbNS6_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#15 0x00000000004008ac in
_Z7extractILc9ELi14EPiIP11AccountNameP12AccountCryptP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEES0_S0_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS8_ILh254EEESG_7VRecordILc32E10global_regEEEbNS7_7XStringE6RecordIXT_EXT0_EIT1_DpT2_EE
()
#16 0x00000000004006fc in _ZL7extractN7strings7XStringEP8AuthData ()
#17 0x000000000040073d in _Z13mmo_auth_initN7strings7XStringE ()
#18 0x0000000000400752 in main ()

backtrace for clang, with demangling:
#0  _IO_puts (str=0x40247c "hello") at ioputs.c:34
#1  0x000000000040239c in bool extract<(char)32, global_reg>(strings::XString,
VRecord<(char)32, global_reg>) ()
#2  0x000000000040234d in bool extract<(char)9, 1, VRecord<(char)32,
global_reg>>(strings::XString, Record<(char)9, 1, VRecord<(char)32,
global_reg>>) ()
#3  0x0000000000402317 in bool extract<(char)9, 2, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 2, TimeT*, VRecord<(char)32,
global_reg> >) ()
#4  0x0000000000402298 in bool extract<(char)9, 3, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 3, strings::VString<(unsigned char)254>*, TimeT*,
VRecord<(char)32, global_reg> >) ()
#5  0x00000000004021f9 in bool extract<(char)9, 4, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg>
>(strings::XString, Record<(char)9, 4, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >) ()
#6  0x0000000000402140 in bool extract<(char)9, 5, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg>
>(strings::XString, Record<(char)9, 5, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg> >)
()
#7  0x0000000000402090 in bool extract<(char)9, 6, timestamp_seconds_buffer*,
TimeT*, IP_String*, strings::VString<(unsigned char)254>*, TimeT*,
VRecord<(char)32, global_reg> >(strings::XString, Record<(char)9, 6,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >) ()
#8  0x0000000000401fe8 in bool extract<(char)9, 7, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 7, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#9  0x0000000000401f58 in bool extract<(char)9, 8, int*, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 8, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#10 0x0000000000401ec0 in bool extract<(char)9, 9, int*, int*, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >(strings::XString,
Record<(char)9, 9, int*, int*, AccountEmail*, timestamp_seconds_buffer*,
TimeT*, IP_String*, strings::VString<(unsigned char)254>*, TimeT*,
VRecord<(char)32, global_reg> >) ()
#11 0x0000000000401e00 in bool extract<(char)9, 10, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 10, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#12 0x0000000000401d48 in bool extract<(char)9, 11,
timestamp_milliseconds_buffer*, strings::VString<(unsigned char)1>*, int*,
int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg>
>(strings::XString, Record<(char)9, 11, timestamp_milliseconds_buffer*,
strings::VString<(unsigned char)1>*, int*, int*, AccountEmail*,
timestamp_seconds_buffer*, TimeT*, IP_String*, strings::VString<(unsigned
char)254>*, TimeT*, VRecord<(char)32, global_reg> >) ()
#13 0x0000000000401c7b in bool extract<(char)9, 12, AccountCrypt*,
timestamp_milliseconds_buffer*, strings::VString<(unsigned char)1>*, int*,
int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg>
>(strings::XString, Record<(char)9, 12, AccountCrypt*,
timestamp_milliseconds_buffer*, strings::VString<(unsigned char)1>*, int*,
int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*, IP_String*,
strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32, global_reg> >)
()
#14 0x0000000000401ba9 in bool extract<(char)9, 13, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 13, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#15 0x000000000040094f in bool extract<(char)9, 14, int*, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >(strings::XString, Record<(char)9, 14, int*, AccountName*,
AccountCrypt*, timestamp_milliseconds_buffer*, strings::VString<(unsigned
char)1>*, int*, int*, AccountEmail*, timestamp_seconds_buffer*, TimeT*,
IP_String*, strings::VString<(unsigned char)254>*, TimeT*, VRecord<(char)32,
global_reg> >) ()
#16 0x0000000000400879 in extract(strings::XString, AuthData*) ()
#17 0x0000000000400685 in mmo_auth_init(strings::XString) ()
#18 0x000000000040089d in main ()

backtrace for clang, no demangling:
(gdb) bt
#0  _IO_puts (str=0x40247c "hello") at ioputs.c:34
#1  0x000000000040239c in
_Z7extractILc32E10global_regEbN7strings7XStringE7VRecordIXT_ET0_E ()
#2  0x000000000040234d in
_Z7extractILc9ELi1E7VRecordILc32E10global_regEJEEbN7strings7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#3  0x0000000000402317 in
_Z7extractILc9ELi2EP5TimeTJ7VRecordILc32E10global_regEEEbN7strings7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#4  0x0000000000402298 in
_Z7extractILc9ELi3EPN7strings7VStringILh254EEEJP5TimeT7VRecordILc32E10global_regEEEbNS0_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#5  0x00000000004021f9 in
_Z7extractILc9ELi4EP9IP_StringJPN7strings7VStringILh254EEEP5TimeT7VRecordILc32E10global_regEEEbNS2_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#6  0x0000000000402140 in
_Z7extractILc9ELi5EP5TimeTJP9IP_StringPN7strings7VStringILh254EEES1_7VRecordILc32E10global_regEEEbNS4_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#7  0x0000000000402090 in
_Z7extractILc9ELi6EP24timestamp_seconds_bufferJP5TimeTP9IP_StringPN7strings7VStringILh254EEES3_7VRecordILc32E10global_regEEEbNS6_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#8  0x0000000000401fe8 in
_Z7extractILc9ELi7EP12AccountEmailJP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES5_7VRecordILc32E10global_regEEEbNS8_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#9  0x0000000000401f58 in
_Z7extractILc9ELi8EPiJP12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES6_7VRecordILc32E10global_regEEEbNS9_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#10 0x0000000000401ec0 in
_Z7extractILc9ELi9EPiJS0_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPN7strings7VStringILh254EEES6_7VRecordILc32E10global_regEEEbNS9_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#11 0x0000000000401e00 in
_Z7extractILc9ELi10EPN7strings7VStringILh1EEEJPiS4_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS1_ILh254EEESA_7VRecordILc32E10global_regEEEbNS0_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#12 0x0000000000401d48 in
_Z7extractILc9ELi11EP29timestamp_milliseconds_bufferJPN7strings7VStringILh1EEEPiS6_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS3_ILh254EEESC_7VRecordILc32E10global_regEEEbNS2_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#13 0x0000000000401c7b in
_Z7extractILc9ELi12EP12AccountCryptJP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiS8_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS5_ILh254EEESE_7VRecordILc32E10global_regEEEbNS4_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#14 0x0000000000401ba9 in
_Z7extractILc9ELi13EP11AccountNameJP12AccountCryptP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEEPiSA_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS7_ILh254EEESG_7VRecordILc32E10global_regEEEbNS6_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#15 0x000000000040094f in
_Z7extractILc9ELi14EPiJP11AccountNameP12AccountCryptP29timestamp_milliseconds_bufferPN7strings7VStringILh1EEES0_S0_P12AccountEmailP24timestamp_seconds_bufferP5TimeTP9IP_StringPNS8_ILh254EEESG_7VRecordILc32E10global_regEEEbNS7_7XStringE6RecordIXT_EXT0_EJT1_DpT2_EE
()
#16 0x0000000000400879 in _ZL7extractN7strings7XStringEP8AuthData ()
#17 0x0000000000400685 in _Z13mmo_auth_initN7strings7XStringE ()
#18 0x000000000040089d in main ()

-- 
You are receiving this mail because:
You are on the CC list for the bug.