Backtrace

Benutzung von break, step...
http://openbook.rheinwerk-verlag.de/linux_unix_programmierung/Kap17-005.htm

After the first steps:
https://sourceware.org/gdb/onlinedocs/gdb/Print-Settings.html#Print-Settings

In Java gibt es Stacktraces -> Nach Äquivalent gesucht und gefunden:
http://www.chemie.fu-berlin.de/chemnet/use/info/gdb/gdb_7.html

Finish (Funkion ausführen bis zum Ende und Return-Value anzeigen lassen):
http://stackoverflow.com/questions/267674/inspect-the-return-value-of-a-function-in-gdb

patrick@pats-ubuntu:~/ti2/ueb/02$ gdb fehlerhaft
GNU gdb (Ubuntu 7.9-1ubuntu1) 7.9
Copyright (C) 2015 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".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from fehlerhaft...done.
(gdb) break main
Breakpoint 1 at 0x400dcf: file fehlerhaft.cc, line 12.
(gdb) run
Starting program: /home/patrick/ti2/ueb/02/fehlerhaft

Breakpoint 1, main () at fehlerhaft.cc:12
12	fehlerhaft.cc: No such file or directory.
(gdb) step
make_reader () at fehlerhaft.cc:6
6	in fehlerhaft.cc
(gdb) step
7	in fehlerhaft.cc
(gdb) step
main () at fehlerhaft.cc:15
15	in fehlerhaft.cc
(gdb) step
Reader::read (this=0x0, in=...) at read.cc:7
7	read.cc: No such file or directory.
(gdb) step

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b8cab0 in std::string::length() const ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(gdb) step
Single stepping until exit from function _ZNKSs6lengthEv,
which has no line number information.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) break make_reader
Breakpoint 2 at 0x400dc0: file fehlerhaft.cc, line 6.
(gdb) break Reader::read
Breakpoint 3 at 0x400ea0: Reader::read. (2 locations)
(gdb) run
Starting program: /home/patrick/ti2/ueb/02/fehlerhaft

Breakpoint 1, main () at fehlerhaft.cc:12
12	fehlerhaft.cc: No such file or directory.
(gdb) step

Breakpoint 2, make_reader () at fehlerhaft.cc:6
6	in fehlerhaft.cc
(gdb) backtrace full
#0  make_reader () at fehlerhaft.cc:6
No locals.
#1  0x0000000000400dd4 in main () at fehlerhaft.cc:12
        reader = 0x0
        chars_read = 140737488346784
(gdb) finish
Run till exit from #0  make_reader () at fehlerhaft.cc:6
0x0000000000400dd4 in main () at fehlerhaft.cc:12
12	in fehlerhaft.cc
Value returned is $1 = (Reader *) 0x0
(gdb) step
15	in fehlerhaft.cc
(gdb) step

Breakpoint 3, Reader::read (this=0x0, in=...) at read.cc:7
7	read.cc: No such file or directory.
(gdb) backtrace full
#0  Reader::read (this=0x0, in=...) at read.cc:7
        old_length = 0
        c = 0
#1  0x0000000000400de9 in main () at fehlerhaft.cc:15
        reader = 0x0
        chars_read = 140737488346784
(gdb) step

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b8cab0 in std::string::length() const ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(gdb) step
Single stepping until exit from function _ZNKSs6lengthEv,
which has no line number information.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) q