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Migz Espino (lfc083)
CMPT332-LFC083-LAB0
Commits
1b418604
Commit
1b418604
authored
3 months ago
by
Miguel Espino
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gdb stuff
parent
95e4ad5f
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1b418604
#------------------------------------#
# Miguel Espino
# ll352639
# lfc083
#------------------------------------#
(gdb) run
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) n
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Usage: perror. wrong number of arguments: Success
[Inferior 1 (process 20823) exited with code 0377]
Missing debuginfo, try: dnf debuginfo-install glibc-2.39-22.fc40.x86_64
(gdb) run 1
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
123
321
12
12
12
Program received signal SIGSEGV, Segmentation fault.
0x00000000004016ea in main (argc=2, argv=0x7fffffffdb48) at sortMain.c:48
48 if ((nlines = *(int *)readlines(lineptr, MAXLINES)) >=0)
(gdb) b readlines
Breakpoint 1 at 0x401405: file input-routines.c, line 33.
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) yes
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Breakpoint 1, readlines (lineptr=0x404080 <lineptr>,
maxlines=100) at input-routines.c:33
33 nlines=0;
(gdb) c
Continuing.
12
12
12
Program received signal SIGSEGV, Segmentation fault.
0x00000000004016ea in main (argc=2, argv=0x7fffffffdb48) at sortMain.c:48
48 if ((nlines = *(int *)readlines(lineptr, MAXLINES)) >=0)
(gdb) b 47
Breakpoint 2 at 0x4016db: file sortMain.c, line 48.
(gdb) d readlines
(gdb) run 1
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Breakpoint 2, main (argc=2, argv=0x7fffffffdb48) at sortMain.c:48
48 if ((nlines = *(int *)readlines(lineptr, MAXLINES)) >=0)
(gdb) n
Breakpoint 1, readlines (lineptr=0x404080 <lineptr>,
maxlines=100) at input-routines.c:33
33 nlines=0;
(gdb) s
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd970 "@", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd970 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd970 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb) info local
c = 10
i = 0
Breakpoint 1, main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:48
48 if ((nlines = *(int *)readlines(lineptr, MAXLINES)) >=0)
(gdb)
(gdb) s
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:33
33 nlines=0;
(gdb) s
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "@", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb) s
18 if (c == '\n')
(gdb)
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb)
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb) info local
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb)
c = 10
i = 0
(gdb) s
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb)
40 line [len-1] = '\0';
(gdb) info local
len = 1
nlines = 11
p = 0x405810 ""
line = "\n\000\000\000\000\000\000\000\b\000\000\000\000\000\000\000\000\200\0
00\000\000\000\000\000\000\b\000\000\000\000\000\000\000\b", '\000' <repeats 14
times>, "\316\335\377\377\377\177\000\000\001\000\000\000\000\000\000\005\000\
001\000\000\000\000\000\000\330\331\377\377\377\177\000\000\002", '\000'
<repeats 16 times>, "\320\377", <incomplete sequence \367>
(gdb)
len = 1
nlines = 11
p = 0x405810 ""
line = "\n\000\000\000\000\000\000\000\b\000\000\000\000\000\000\000\000\200\00
0\000\000\000\000\000\000\b\000\000\000\000\000\000\000\b", '\000' <repeats 14
times>, "\316\335\377\377\377\177\000\000\001\000\000\000\000\000\000\005\000\
001\000\000\000\000\000\000\330\331\377\377\377\177\000\000\002", '\000'
<repeats 16 times>, "\320\377", <incomplete sequence \367>
(gdb) s
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb) info local
c = 0
i = 0
(gdb) s
41 memmove(p, line, len);
(gdb)
42 lineptr[nlines++] = p;
(gdb)
34 while ((len = myGetline(line, MAXLEN)) > 0)
(gdb)
myGetline (s=0x7fffffffd800 "\r", lim=100) at input-routines.c:16
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
123
17 s[i] = c;
(gdb)
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb) info lcoal
Undefined info command: "lcoal". Try "help info".
(gdb) info local
c = 49
i = 0
(gdb)
c = 49
i = 0
(gdb) s
17 s[i] = c;
(gdb) info local
c = 50
i = 1
(gdb) s
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
17 s[i] = c;
(gdb)
16 for (i=0;i<lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
(gdb)
18 if (c == '\n')
(gdb) info local
c = 10
i = 3
(gdb) s
20 s[i] = c;
(gdb)
21 ++i;
(gdb)
23 return i;
(gdb)
25 }
(gdb)
readlines (lineptr=0x404080 <lineptr>, maxlines=100) at input-routines.c:36
36 if (nlines >= maxlines || (p = (char *)malloc(len)) == NULL)
(gdb) info local
len = 4
nlines = 2
p = 0x4056d0 "\r"
line = "123\n\000\000\000\000\b\000\000\000\000\000\000\000\000\200\000\000\00
0\000\000\000\000\b\000\000\000\000\000\000\000\b", '\000' <repeats 14 times>,
"\316\335\377\377\377\177\000\000\001\000\000\000\000\000\000\005\000\001\000
\000\000\000\000\000\330\331\377\377\377\177\000\000\002", '\000'
<repeats 16 times>, "\320\377", <incomplete sequence \367>
(gdb) p p
$1 = 0x4056d0 "\r"
(gdb) p *p
$2 = 13 '\r'
(gdb) s
40 line [len-1] = '\0';
(gdb) info local
len = 4
nlines = 2
p = 0x4056f0 ""
line = "123\n\000\000\000\000\b\000\000\000\000\000\000\000\000\200\000\000\00
0\000\000\000\000\b\000\000\000\000\000\000\000\b", '\000' <repeats 14 times>,
"\316\335\377\377\377\177\000\000\001\000\000\000\000\000\000\005\000\001\000\
000\000\000\000\000\330\331\377\377\377\177\000\000\002", '\000'
<repeats 16 times>, "\320\377", <incomplete sequence \367>
(gdb) p line
$3 = "123\n\000\000\000\000\b\000\000\000\000\000\000\000\000\200\000\000\000
\000\000\000\000\b\000\000\000\000\000\000\000\b", '\000' <repeats 14 times>,
"\316\335\377\377\377\177\000\000\001\000\000\000\000\000\000\005\000\001\00
0\000\000\000\000\000\330\331\377\377\377\177\000\000\002", '\000'
<repeats 16 times>, "\320\377", <incomplete sequence \367>
(gdb) p *line
$4 = 49 '1'
Breakpoint 1, main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:48
48 if ((nlines = readlines(lineptr, MAXLINES)) >=0)
Missing debuginfo, try: dnf debuginfo-install glibc-2.39-22.fc40.x86_64
(gdb) c
Continuing.
123
21
123
1
2
UNSORTED ORDER
Program received signal SIGSEGV, Segmentation fault.
(gdb) b 55
Breakpoint 1 at 0x40172d: file sortMain.c, line 55.
(gdb) c
The program is not being run.
(gdb) run 1
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) n
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
12
321
12
1
12
3
UNSORTED ORDER
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7e24e5d in __strlen_avx2 () from /lib64/libc.so.6
Missing debuginfo, try: dnf debuginfo-install glibc-2.39-22.fc40.x86_64
(gdb) s
Single stepping until exit from function __strlen_avx2,
which has no line number information.
Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) quit
(gdb) b 50
Breakpoint 1 at 0x4016f3: file sortMain.c, line 50.
(gdb) s
The program is not being run.
(gdb) run 1
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) n
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
s
123
321
123
2
2
1
2
Breakpoint 1, main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:50
50 printf("UNSORTED ORDER\n");
Missing debuginfo, try: dnf debuginfo-install glibc-2.39-22.fc40.x86_64
(gdb) s
UNSORTED ORDER
51 writelines(*lineptr, nlines);
(gdb)
writelines (lineptr=0x4056b0, nlines=8) at input-routines.c:51
warning: Source file is more recent than executable.
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
Program received signal SIGSEGV, Segmentation fault.
(gdb) b 53
Breakpoint 1 at 0x40170c: file sortMain.c, line 53.
(gdb) run 1
Starting program: /student/lfc083/cmpt332-lfc083-lab0/myQsort 1
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) n
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
s
123
123
12
1
UNSORTED ORDER
s
123
123
12
1
Breakpoint 1, main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:53
53 myQsort ((void **)lineptr, 0, nlines-1, comparing);
Missing debuginfo, try: dnf debuginfo-install glibc-2.39-22.fc40.x86_64
(gdb) s
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
26 (*swap)(v, left, (left + right)/2);
(gdb)
swap (v=0x404080 <lineptr>, i=0, j=2) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:27
27 last = left;
(gdb)
29 for (index = left+1; index < right; index++)
(gdb) info local
index = 0
last = 0
(gdb)
index = 0
last = 0
(gdb)
index = 0
last = 0
(gdb) s
31 if ((*comp)(v[index],v[left]) < 0)
(gdb)
compareInt (first=0x4056d0, second=0x4056f0) at intComp.c:21
21 iFirst = *(int*)first;
(gdb)
22 iSecond = *(int*)second;
(gdb)
24 if(iFirst < iSecond){
(gdb)
25 return -1;
(gdb)
31 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:32
32 (*swap)(v, ++last, index);
(gdb) info local
index = 1
last = 0
(gdb)
index = 1
last = 0
(gdb)
index = 1
last = 0
(gdb)
index = 1
last = 0
(gdb)
index = 1
last = 0
(gdb)
index = 1
last = 0
(gdb) s
swap (v=0x404080 <lineptr>, i=1, j=1) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:29
29 for (index = left+1; index < right; index++)
(gdb)
31 if ((*comp)(v[index],v[left]) < 0)
(gdb)
compareInt (first=0x4056b0, second=0x4056f0) at intComp.c:21
21 iFirst = *(int*)first;
(gdb)
22 iSecond = *(int*)second;
(gdb)
24 if(iFirst < iSecond){
(gdb)
25 return -1;
(gdb)
31 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:32
32 (*swap)(v, ++last, index);
(gdb)
swap (v=0x404080 <lineptr>, i=2, j=2) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:29
29 for (index = left+1; index < right; index++)
(gdb)
31 if ((*comp)(v[index],v[left]) < 0)
(gdb)
compareInt (first=0x405710, second=0x4056f0) at intComp.c:21
21 iFirst = *(int*)first;
(gdb)
22 iSecond = *(int*)second;
(gdb)
24 if(iFirst < iSecond){
(gdb)
27 return (iFirst > iSecond);
(gdb)
31 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:29
29 for (index = left+1; index < right; index++)
(gdb)
31 if ((*comp)(v[index],v[left]) < 0)
(gdb)
compareInt (first=0x405730, second=0x4056f0) at intComp.c:21
21 iFirst = *(int*)first;
(gdb)
22 iSecond = *(int*)second;
(gdb)
24 if(iFirst < iSecond){
(gdb)
25 return -1;
(gdb)
31 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>
) at qsort.c:32
32 (*swap)(v, ++last, index);
(gdb)
swap (v=0x404080 <lineptr>, i=3, j=4) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb) info local
temp = 0x405710
(gdb) p *temp
Attempt to dereference a generic pointer.
(gdb) p (int) temp
$1 = 4216592
(gdb) s
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:29
29 for (index = left+1; index < right; index++)
(gdb)
35 (*swap)(v, left, last);
(gdb)
swap (v=0x404080 <lineptr>, i=0, j=3) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:36
36 myQsort(v, left, last-1, comp);
(gdb) info local
index = 5
last = 3
(gdb) s
myQsort (v=0x404080 <lineptr>, left=0, right=2, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb) s
26 (*swap)(v, left, (left + right)/2);
(gdb)
swap (v=0x404080 <lineptr>, i=0, j=1) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=2, comp=0x401344 <compareInt>
) at qsort.c:27
27 last = left;
(gdb)
29 for (index = left+1; index < right; index++)
(gdb)
31 if ((*comp)(v[index],v[left]) < 0)
(gdb)
compareInt (first=0x405730, second=0x4056d0) at intComp.c:21
21 iFirst = *(int*)first;
(gdb)
22 iSecond = *(int*)second;
(gdb) info local
iFirst = 12849
iSecond = 4216624
(gdb) s
24 if(iFirst < iSecond){
(gdb)
27 return (iFirst > iSecond);
(gdb)
31 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=2, comp=0x401344 <compareInt>)
at qsort.c:29
29 for (index = left+1; index < right; index++)
(gdb)
35 (*swap)(v, left, last);
(gdb)
swap (v=0x404080 <lineptr>, i=0, j=0) at swap.c:12
12 temp = v[i];
(gdb) info local
temp = 0x323100000000
(gdb) s
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=2, comp=0x401344 <compareInt>)
at qsort.c:36
36 myQsort(v, left, last-1, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=-1, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
24 return;
(gdb)
38 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=2, comp=0x401344 <compareInt>)
at qsort.c:37
37 myQsort(v, last+1, right, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=1, right=2, comp=0x401344 <compareInt>
) at qsort.c:23
23 if (left >= right)
(gdb)
26 (*swap)(v, left, (left + right)/2);
(gdb)
swap (v=0x404080 <lineptr>, i=1, j=1) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=1, right=2, comp=0x401344 <compareInt>)
at qsort.c:27
27 last = left;
(gdb)
29 for (index = left+1; index < right; index++)
(gdb)
35 (*swap)(v, left, last);
(gdb)
swap (v=0x404080 <lineptr>, i=1, j=1) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=1, right=2, comp=0x401344 <compareInt>)
at qsort.c:36
36 myQsort(v, left, last-1, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=1, right=0, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
24 return;
(gdb)
38 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=1, right=2, comp=0x401344 <compareInt>)
at qsort.c:37
37 myQsort(v, last+1, right, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=2, right=2, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
24 return;
(gdb)
38 }
(gdb)
38 }
(gdb)
38 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=0, right=5, comp=0x401344 <compareInt>)
at qsort.c:37
37 myQsort(v, last+1, right, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=4, right=5, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
26 (*swap)(v, left, (left + right)/2);
(gdb)
swap (v=0x404080 <lineptr>, i=4, j=4) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=4, right=5, comp=0x401344 <compareInt>)
at qsort.c:27
27 last = left;
(gdb)
29 for (index = left+1; index < right; index++)
(gdb)
35 (*swap)(v, left, last);
(gdb)
swap (v=0x404080 <lineptr>, i=4, j=4) at swap.c:12
12 temp = v[i];
(gdb)
13 v[i] = v[j];
(gdb)
14 v[j] = temp;
(gdb)
15 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=4, right=5, comp=0x401344 <compareInt>)
at qsort.c:36
36 myQsort(v, left, last-1, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=4, right=3, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
24 return;
(gdb)
38 }
(gdb)
myQsort (v=0x404080 <lineptr>, left=4, right=5, comp=0x401344 <compareInt>
) at qsort.c:37
37 myQsort(v, last+1, right, comp);
(gdb)
myQsort (v=0x404080 <lineptr>, left=5, right=5, comp=0x401344 <compareInt>)
at qsort.c:23
23 if (left >= right)
(gdb)
24 return;
(gdb)
38 }
(gdb)
38 }
(gdb)
38 }
(gdb)
main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:55
55 printf("\nSORTED ORDER \n");
(gdb)
SORTED ORDER
57 writelines(lineptr, nlines);
(gdb)
writelines (lineptr=0x404080 <lineptr>, nlines=6) at input-routines.c:51
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
12
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
s
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
123
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
123
51 while (nlines-- >0)
(gdb)
52 printf("%s\n", *lineptr++);
(gdb)
1
51 while (nlines-- >0)
(gdb)
53 }
(gdb)
main (argc=2, argv=0x7fffffffd9d8) at sortMain.c:58
58 return 0;
(gdb)
65 }
(gdb)
0x00007ffff7cdf088 in __libc_start_call_main () from /lib64/libc.so.6
(gdb)
Single stepping until exit from function __libc_start_call_main,
which has no line number information.
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