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Fortran 的gdb命令行调试

2019-02-01
cndaqiang
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shell+gfortran

参考

《Fortran实用编程》系列视频教程 - Fortran Coder 研讨团队

使用 GDB 调试 Linux 软件

编译-g

gfortran -g xxx.f90 -o run.o
gdb run.o

进入调试状态

gdb调试命令

l查看源码

Reading symbols from a.out...done.
(gdb) l
1       program str
2             implicit none
3             integer::filenum(5)
4             integer::i,uid
5             character(len=10) :: filename
6             data filenum /1,12,123,1234,12345/
7             uid=20
8             filename="qwertyuiop"
9             do i=1,5
10            write(filename,"(i6.5a4)") filenum(i),".txt"
(gdb)!回车查看下一页

b 8break 8在第8行加断点

'disable <breakpoint number>'、'enable <breakpoint number>' 或 'delete <breakpoint number>' 来禁用、启用和彻底删除断点

rrun 从头开始运行

ccontinue继续执行

nnext单步调试

(gdb) next
10            write(filename,"(i6.5a4)") filenum(i),".txt"
(gdb) next
11            write(*,"(a10)") filename

info locals查看变量信息

print 变量名查看某一变量信息

(gdb) info locals
filename = ' 12345.txt'
filenum = (1, 12, 123, 1234, 12345)
i = 6
uid = 20
(gdb) print i
$4 = 6 !4是第四个变量

set var bianliang=值该变数值

(gdb) info locals
filename = ' 00001.txt'
filenum = (1, 12, 123, 1234, 12345)
i = 1
uid = 20
(gdb) set var filenum(1)=10
(gdb) info locals
filename = ' 00001.txt'
filenum = (10, 12, 123, 1234, 12345)
i = 1
uid = 20

qquit退出


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