📄 csdn++-
字号:
=
size=3D4><STRONG>=D3=C3GDB=B5=F7=CA=D4=B3=CC=D0=F2</STRONG></FONT></P>
<P><FONT=20
face=3D"Courier =
New"><STRONG>GDB=B8=C5=CA=F6<BR>=A1=AA=A1=AA=A1=AA=A1=AA</STRONG></FONT><=
/P>
<P><FONT=20
face=3D"Courier =
New">GDB=CA=C7GNU=BF=AA=D4=B4=D7=E9=D6=AF=B7=A2=B2=BC=B5=C4=D2=BB=B8=F6=C7=
=BF=B4=F3=B5=C4UNIX=CF=C2=B5=C4=B3=CC=D0=F2=B5=F7=CA=D4=B9=A4=BE=DF=A1=A3=
=BB=F2=D0=ED=A3=AC=B8=F7=CE=BB=B1=C8=BD=CF=CF=B2=BB=B6=C4=C7=D6=D6=CD=BC=D0=
=CE=BD=E7=C3=E6=B7=BD=CA=BD=B5=C4=A3=AC=CF=F1VC=A1=A2BCB=B5=C8IDE=B5=C4=B5=
=F7=CA=D4=A3=AC=B5=AB=C8=E7=B9=FB=C4=E3=CA=C7=D4=DAUNIX=C6=BD=CC=A8=CF=C2=
=D7=F6=C8=ED=BC=FE=A3=AC=C4=E3=BB=E1=B7=A2=CF=D6GDB=D5=E2=B8=F6=B5=F7=CA=D4=
=B9=A4=BE=DF=D3=D0=B1=C8VC=A1=A2BCB=B5=C4=CD=BC=D0=CE=BB=AF=B5=F7=CA=D4=C6=
=F7=B8=FC=C7=BF=B4=F3=B5=C4=B9=A6=C4=DC=A1=A3=CB=F9=CE=BD=A1=B0=B4=E7=D3=D0=
=CB=F9=B3=A4=A3=AC=B3=DF=D3=D0=CB=F9=B6=CC=A1=B1=BE=CD=CA=C7=D5=E2=B8=F6=B5=
=C0=C0=ED=A1=A3</FONT></P>
<P><FONT face=3D"Courier =
New">=D2=BB=B0=E3=C0=B4=CB=B5=A3=ACGDB=D6=F7=D2=AA=B0=EF=C3=A6=C4=E3=CD=EA=
=B3=C9=CF=C2=C3=E6=CB=C4=B8=F6=B7=BD=C3=E6=B5=C4=B9=A6=C4=DC=A3=BA</FONT>=
</P>
<P><FONT face=3D"Courier New"> =20
=
1=A1=A2=C6=F4=B6=AF=C4=E3=B5=C4=B3=CC=D0=F2=A3=AC=BF=C9=D2=D4=B0=B4=D5=D5=
=C4=E3=B5=C4=D7=D4=B6=A8=D2=E5=B5=C4=D2=AA=C7=F3=CB=E6=D0=C4=CB=F9=D3=FB=B5=
=C4=D4=CB=D0=D0=B3=CC=D0=F2=A1=A3<BR> =20
=
2=A1=A2=BF=C9=C8=C3=B1=BB=B5=F7=CA=D4=B5=C4=B3=CC=D0=F2=D4=DA=C4=E3=CB=F9=
=D6=B8=B6=A8=B5=C4=B5=F7=D6=C3=B5=C4=B6=CF=B5=E3=B4=A6=CD=A3=D7=A1=A1=A3=A3=
=A8=B6=CF=B5=E3=BF=C9=D2=D4=CA=C7=CC=F5=BC=FE=B1=ED=B4=EF=CA=BD=A3=A9<BR>=
=20
=
3=A1=A2=B5=B1=B3=CC=D0=F2=B1=BB=CD=A3=D7=A1=CA=B1=A3=AC=BF=C9=D2=D4=BC=EC=
=B2=E9=B4=CB=CA=B1=C4=E3=B5=C4=B3=CC=D0=F2=D6=D0=CB=F9=B7=A2=C9=FA=B5=C4=CA=
=C2=A1=A3<BR> =20
=
4=A1=A2=B6=AF=CC=AC=B5=C4=B8=C4=B1=E4=C4=E3=B3=CC=D0=F2=B5=C4=D6=B4=D0=D0=
=BB=B7=BE=B3=A1=A3</FONT></P>
<P><FONT=20
face=3D"Courier =
New">=B4=D3=C9=CF=C3=E6=BF=B4=C0=B4=A3=ACGDB=BA=CD=D2=BB=B0=E3=B5=C4=B5=F7=
=CA=D4=B9=A4=BE=DF=C3=BB=D3=D0=CA=B2=C3=B4=C1=BD=D1=F9=A3=AC=BB=F9=B1=BE=C9=
=CF=D2=B2=CA=C7=CD=EA=B3=C9=D5=E2=D0=A9=B9=A6=C4=DC=A3=AC=B2=BB=B9=FD=D4=DA=
=CF=B8=BD=DA=C9=CF=A3=AC=C4=E3=BB=E1=B7=A2=CF=D6GDB=D5=E2=B8=F6=B5=F7=CA=D4=
=B9=A4=BE=DF=B5=C4=C7=BF=B4=F3=A3=AC=B4=F3=BC=D2=BF=C9=C4=DC=B1=C8=BD=CF=CF=
=B0=B9=DF=C1=CB=CD=BC=D0=CE=BB=AF=B5=C4=B5=F7=CA=D4=B9=A4=BE=DF=A3=AC=B5=AB=
=D3=D0=CA=B1=BA=F2=A3=AC=C3=FC=C1=EE=D0=D0=B5=C4=B5=F7=CA=D4=B9=A4=BE=DF=C8=
=B4=D3=D0=D7=C5=CD=BC=D0=CE=BB=AF=B9=A4=BE=DF=CB=F9=B2=BB=C4=DC=CD=EA=B3=C9=
=B5=C4=B9=A6=C4=DC=A1=A3=C8=C3=CE=D2=C3=C7=D2=BB=D2=BB=BF=B4=C0=B4=A1=A3<=
/FONT></P>
<P><BR><FONT=20
face=3D"Courier =
New"><STRONG>=D2=BB=B8=F6=B5=F7=CA=D4=CA=BE=C0=FD<BR>=A1=AA=A1=AA=A1=AA=A1=
=AA=A1=AA=A1=AA</STRONG></FONT></P>
<P><FONT face=3D"Courier =
New">=D4=B4=B3=CC=D0=F2=A3=BAtst.c</FONT></P>
<P><FONT face=3D"Courier New"> 1 =
#include=20
<stdio.h><BR> =20
2<BR> 3 int func(int=20
n)<BR> 4 =
{<BR> =20
5 int=20
sum=3D0,i;<BR> =20
6 for(i=3D0; =
i<n;=20
i++)<BR> =20
7 =20
{<BR> =20
=
8 =
=20
sum+=3Di;<BR> =20
9 =20
}<BR> =20
10 return=20
sum;<BR> 11 }<BR> =20
12<BR> 13<BR> 14=20
main()<BR> 15 {<BR> =20
16 int=20
i;<BR> =20
17 long =
result =3D=20
0;<BR> =20
18 =
for(i=3D1;=20
i<=3D100; i++)<BR> =20
19 =20
{<BR> =20
=
20  =
; =20
result +=3D i;<BR> =20
21 =20
}<BR> 22<BR> =20
23 =
printf("result[1-100] =3D=20
%d \n", result );<BR> =20
24 =
printf("result[1-250] =3D=20
%d \n", func(250) );<BR> 25 }</FONT></P>
<P><FONT face=3D"Courier =
New">=B1=E0=D2=EB=C9=FA=B3=C9=D6=B4=D0=D0=CE=C4=BC=FE=A3=BA=A3=A8Linux=CF=
=C2=A3=A9<BR> =20
hchen/test> cc -g tst.c -o tst</FONT></P>
<P><FONT face=3D"Courier =
New">=CA=B9=D3=C3GDB=B5=F7=CA=D4=A3=BA</FONT></P>
<P><FONT face=3D"Courier New">hchen/test> gdb tst =20
<---------- =C6=F4=B6=AFGDB<BR>GNU gdb 5.1.1<BR>Copyright =
2002 Free=20
Software Foundation, Inc.<BR>GDB is free software, covered =
by the=20
GNU General Public License, and you are<BR>welcome to change =
it=20
and/or distribute copies of it under certain =
conditions.<BR>Type=20
"show copying" to see the conditions.<BR>There is absolutely =
no=20
warranty for GDB. Type "show warranty" for =
details.<BR>This=20
GDB was configured as "i386-suse-linux"...<BR>(gdb)=20
l <--------------------=20
=
l=C3=FC=C1=EE=CF=E0=B5=B1=D3=DAlist=A3=AC=B4=D3=B5=DA=D2=BB=D0=D0=BF=AA=CA=
=BC=C0=FD=B3=F6=D4=AD=C2=EB=A1=A3<BR>1  =
; =20
#include=20
=
<stdio.h><BR>2<BR>3 =20
int func(int =
n)<BR>4 =20
=
{<BR>5 &=
nbsp; =20
int=20
=
sum=3D0,i;<BR>6 &nbs=
p; =20
for(i=3D0; i<n;=20
=
i++)<BR>7 &nbs=
p; =20
=
{<BR>8 &=
nbsp; =20
=
sum+=3Di;<BR>9  =
; =20
=
}<BR>10 =
=20
return sum;<BR>(gdb) =20
<--------------------=20
=
=D6=B1=BD=D3=BB=D8=B3=B5=B1=ED=CA=BE=A3=AC=D6=D8=B8=B4=C9=CF=D2=BB=B4=CE=C3=
=FC=C1=EE<BR>11 =20
}<BR>12<BR>13<BR>14 =20
main()<BR>15 =20
=
{<BR>16 =
=20
int=20
=
i;<BR>17  =
; =20
long result =3D=20
=
0;<BR>18  =
; =20
for(i=3D1; i<=3D100;=20
=
i++)<BR>19 &nb=
sp; =20
=
{<BR>20 =
=20
result +=3D i; <BR>(gdb) break =
16 =20
<-------------------- =
=C9=E8=D6=C3=B6=CF=B5=E3=A3=AC=D4=DA=D4=B4=B3=CC=D0=F2=B5=DA16=D0=D0=B4=A6=
=A1=A3<BR>Breakpoint 1 at=20
0x8048496: file tst.c, line 16.<BR>(gdb) break func =20
<-------------------- =
=C9=E8=D6=C3=B6=CF=B5=E3=A3=AC=D4=DA=BA=AF=CA=FDfunc()=C8=EB=BF=DA=B4=A6=A1=
=A3<BR>Breakpoint 2 at=20
0x8048456: file tst.c, line 5.<BR>(gdb) info break =20
<-------------------- =
=B2=E9=BF=B4=B6=CF=B5=E3=D0=C5=CF=A2=A1=A3<BR>Num=20
=
Type =20
Disp Enb Address What<BR>1 =20
breakpoint keep y =
0x08048496 in=20
main at tst.c:16<BR>2 =
breakpoint =20
keep y 0x08048456 in func at tst.c:5<BR>(gdb)=20
=
r =20
<--------------------- =
=D4=CB=D0=D0=B3=CC=D0=F2=A3=ACrun=C3=FC=C1=EE=BC=F2=D0=B4<BR>Starting =
program:=20
/home/hchen/test/tst</FONT></P>
<P><FONT face=3D"Courier New">Breakpoint 1, main () at=20
tst.c:17 <----------=20
=
=D4=DA=B6=CF=B5=E3=B4=A6=CD=A3=D7=A1=A1=A3<BR>17 &=
nbsp; =20
long result =3D 0;<BR>(gdb)=20
n =20
<---------------------=20
=
=B5=A5=CC=F5=D3=EF=BE=E4=D6=B4=D0=D0=A3=ACnext=C3=FC=C1=EE=BC=F2=D0=B4=A1=
=A3<BR>18 &nbs=
p; =20
for(i=3D1; i<=3D100; i++)<BR>(gdb)=20
=
n<BR>20 =
=20
result +=3D i;<BR>(gdb)=20
=
n<BR>18 =
=20
for(i=3D1; i<=3D100; i++)<BR>(gdb)=20
=
n<BR>20 =
=20
result +=3D i;<BR>(gdb)=20
c =20
<---------------------=20
=
=BC=CC=D0=F8=D4=CB=D0=D0=B3=CC=D0=F2=A3=ACcontinue=C3=FC=C1=EE=BC=F2=D0=B4=
=A1=A3<BR>Continuing.<BR>result[1-100] =3D=20
5050 =20
<----------=B3=CC=D0=F2=CA=E4=B3=F6=A1=A3</FONT></P>
<P><FONT face=3D"Courier New">Breakpoint 2, func (n=3D250) =
at=20
=
tst.c:5<BR>5 &=
nbsp; =20
int sum=3D0,i;<BR>(gdb)=20
=
n<BR>6 &=
nbsp; =20
for(i=3D1; i<=3Dn; i++)<BR>(gdb) p=20
i =20
<--------------------- =
=B4=F2=D3=A1=B1=E4=C1=BFi=B5=C4=D6=B5=A3=ACprint=C3=FC=C1=EE=BC=F2=D0=B4=A1=
=A3<BR>$1 =3D=20
134513808<BR>(gdb)=20
=
n<BR>8 &=
nbsp; =20
sum+=3Di;<BR>(gdb)=20
=
n<BR>6 &=
nbsp; =20
for(i=3D1; i<=3Dn; i++)<BR>(gdb) p sum<BR>$2 =3D =
1<BR>(gdb)=20
=
n<BR>8 &=
nbsp; =20
sum+=3Di;<BR>(gdb) p i<BR>$3 =3D 2<BR>(gdb)=20
=
n<BR>6 &=
nbsp; =20
for(i=3D1; i<=3Dn; i++)<BR>(gdb) p sum<BR>$4 =3D =
3<BR>(gdb)=20
bt =20
<--------------------- =
=B2=E9=BF=B4=BA=AF=CA=FD=B6=D1=D5=BB=A1=A3<BR>#0 func (n=3D250) at =
tst.c:5<BR>#1 0x080484e4 in main () at =
tst.c:24<BR>#2 =20
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