杨光辉 wrote:
> /*pwd.c on the coreutils-6.9*/
> static void
> robust_getcwd (struct file_name *file_name)
> {
> size_t height = 1;
> 262 struct dev_ino dev_ino_buf;
> 263 struct dev_ino *root_dev_ino = get_root_dev_ino (&dev_ino_buf);
>
> .......
> }
> The line 262 and 263 have something wrong. "dev_ino_buf " didn't allocate
> memory. I compilered the pwd.c and found some buggers. Maybe I'm wrong.
The dev_ino_buf variable is a local variable. The compiler will
reserve space for it on the stack. In C this is an "automatic"
variable.
The get_root_dev_ino() routine returns the &dev_ino_buf parameter
value as the return value of the function and it is assigned to the
root_dev_ino variable.
This is not "memory allocation" in the malloc() sense of memory
allocation. All of the variables are local variables and the C
compiler will reserve local stack space for them. What do you mean
when you say "didn't allocate memory" for them?
Are you having a problem with the coreutils pwd?
Bob
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