Hello All,
tp.c:107: error: syntax error before '*' token
tp.c:108: warning: function declaration isn't a prototype
tp.c:121: error: syntax error before '*' token
tp.c:122: warning: function declaration isn't a prototype
tp.c:135: error: syntax error before '*' token
tp.c:138: warning: return type defaults to `int'
tp.c:138: warning: no previous prototype for 'test_modevent'
tp.c: In function `test_modevent':
tp.c:143: warning: assignment from incompatible pointer type
*** Error code 1
************************************************** *
This is the error code that i am getting on gcc conpiler but i dont
understand what could be wrong
i also attach that part of the code here
************************************************** *
struct drv_t {
char name [8];
struct cdev *devt;
};
//static void test_ifstart (drv_t *d);
//static void test_ifwatchdog (drv_t *d);
//static void test_initialize (void *softc);
//static int test_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
static void test_ifstart (drv_t *d)
{
uprintf("inside start\n");
return;
}
Kindly help me in sorting this problem
Thanks and regards,
Rashmi 5 1593
rashmi wrote: tp.c:107: error: syntax error before '*' token
[...] struct drv_t { char name [8]; struct cdev *devt; };
[...] static void test_ifstart (drv_t *d)
In C (other than in C++) a struct/union/enum does not introduce a new type.
Therefore, you need to write
static void test_ifstart (struct drv_t *d)
or use a typedef to make it a type:
typedef struct drv_t drv_t;
Uli
Thank you it really worked
--
rasmi
Ulrich Eckhardt wrote: rashmi wrote: tp.c:107: error: syntax error before '*' token [...] struct drv_t { char name [8]; struct cdev *devt; }; [...] static void test_ifstart (drv_t *d)
In C (other than in C++) a struct/union/enum does not introduce a new type.
Yes, it does.
Therefore, you need to write static void test_ifstart (struct drv_t *d) or use a typedef to make it a type: typedef struct drv_t drv_t;
This is because struct tags are not visible as automatic typedef names
(or whatever C++ does), not because struct is not a new type.
--
Peter
Ulrich Eckhardt <do******@knuut.de> writes: rashmi wrote: tp.c:107: error: syntax error before '*' token [...] struct drv_t { char name [8]; struct cdev *devt; }; [...] static void test_ifstart (drv_t *d)
In C (other than in C++) a struct/union/enum does not introduce a new type.
Yes, it does introduce a new type. The difference is that the tag is
in a separate namespace; it's not directly visible without the
struct/union/enum keyword in front of it.
Therefore, you need to write static void test_ifstart (struct drv_t *d) or use a typedef to make it a type: typedef struct drv_t drv_t;
Right.
It's often argued that the typedef is a bad idea. It serves to hide
the fact that the type is a struct; it's usually better to make that
explicit.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
Ulrich Eckhardt <do******@knuut.de> wrote:
[...] In C [...] a struct/union/enum does not introduce a new type.
On the contrary, as already correctly pointed out by others.
To put even more emphasis on the fact that these keywords actually
declare new types: it can be (and has been, e.g. by Chris Torek)
argued, that it's reasonable to think of "struct" actually /meaning/
"type"!
[...] you need to write static void test_ifstart (struct drv_t *d) or use a typedef to make it a type: typedef struct drv_t drv_t;
Right. Notice however, that the keyword "typedef" does not declare a
new type, but merely declares a typename-alias for an existing type,
covering up the nature of this type. This is often considered a Bad
Thing[tm] to do, at least by a significant number of regulars in this
group, AFAICT.
Best Regards.
--
Irrwahn Grausewitz (ir*******@freenet.de)
welcome to clc : http://www.ungerhu.com/jxh/clc.welcome.txt
clc faq-list : http://www.faqs.org/faqs/C-faq/faq/
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