Don't understand syntax error

[Chris Saunders]

I'm getting this error report from my compiler (MSVC++ 7):

c:\Eiffel55\library\cjs\pdf\spec\include\p_intern. h(258) : error C2143:
syntax error : missing ')' before '*'

Here's the code:
struct PDF_s {
/* -------------------------- general stuff ------------------------ */
unsigned long magic; /* poor man's integrity check */
void (*freeproc)(PDF *p, void *mem);
pdc_core *pdc; /* core context */
....
....
};

I removed all code one line after the error line.
The reported error line is:

void (*freeproc)(PDF *p, void *mem);

I am not an expert in C but I believe I have a reasonable understanding
but I cannot see a problem with this line.

Could anyone help?
--
Regards
Chris Saunders

[Alex Fraser]

"Chris Saunders" <ch************@sympatico.ca> wrote in message
news:dt*****************@news20.bellglobal.com...

I'm getting this error report from my compiler (MSVC++ 7):

c:\Eiffel55\library\cjs\pdf\spec\include\p_intern. h(258) : error C2143:
syntax error : missing ')' before '*'

Here's the code: [snip] The reported error line is:

void (*freeproc)(PDF *p, void *mem);

Because the code you provided is incomplete, it seems that only a guess is
possible. My guess, FWIW, is that it has something to do with "PDF".

Alex

[baumann]

Chris Saunders wrote:

I'm getting this error report from my compiler (MSVC++ 7):

c:\Eiffel55\library\cjs\pdf\spec\include\p_intern. h(258) : error C2143: syntax error : missing ')' before '*'
what's the line of 258?

maybe you have to declare the PDF struct before struct PDF_s

Here's the code:
struct PDF_s {
/* -------------------------- general stuff ------------------------ */ unsigned long magic; /* poor man's integrity check */ void (*freeproc)(PDF *p, void *mem);
pdc_core *pdc; /* core context */
...
...
};

I removed all code one line after the error line.
The reported error line is:

void (*freeproc)(PDF *p, void *mem);

I am not an expert in C but I believe I have a reasonable understanding but I cannot see a problem with this line.

Could anyone help?
--
Regards
Chris Saunders

[Achintya]

Chris Saunders wrote:

I'm getting this error report from my compiler (MSVC++ 7):

c:\Eiffel55\library\cjs\pdf\spec\include\p_intern. h(258) : error C2143: syntax error : missing ')' before '*'

Here's the code:
struct PDF_s {
/* -------------------------- general stuff ------------------------ */ unsigned long magic; /* poor man's integrity check */ void (*freeproc)(PDF *p, void *mem);
pdc_core *pdc; /* core context */
...
...
};

I removed all code one line after the error line.
The reported error line is:

void (*freeproc)(PDF *p, void *mem);

I am not an expert in C but I believe I have a reasonable understanding but I cannot see a problem with this line.

Could anyone help?
--
Regards
Chris Saunders
Hi,

I think the line...
void (*freeproc)(PDF *p, void *mem);

should be...

void (*freeproc)(struct PDF *p, void *mem);

I haven't tried compiling since I donot have VC 7.

-vs_p

[Jaspreet]

I am just making a guess here.

Have you already declared PDF before using it in
void (*freeproc)(PDF *p, void *mem);

It would help if you could let us have the defintion of PDF ?

Having a struct keyword or not before PDF should not make a difference
though.

[Chris Torek]

In article <dt*****************@news20.bellglobal.com>
Chris Saunders <ch************@sympatico.ca> wrote:

[snippage]

struct PDF_s {
void (*freeproc)(PDF *p, void *mem);
};
[produces a syntax error on the middle of the three above lines]
Could anyone help?

See <http://web.torek.net/torek/c/types2.html>, paying particular
attention to the ordering rules for using typedefs (near the bottom
of the article). The typedef line I see in my crystal ball:

typedef struct PDF_s PDF;

must come *before* the definition of the structure.
--
In-Real-Life: Chris Torek, Wind River Systems
Salt Lake City, UT, USA (40°39.22'N, 111°50.29'W) [phone]
email: forget about it http://web.torek.net/torek/index.html
Reading email is like searching for food in the garbage, thanks to spammers.

[Keith Thompson]

"Jaspreet" <js***********@gmail.com> writes:

I am just making a guess here.

Have you already declared PDF before using it in
void (*freeproc)(PDF *p, void *mem);

It would help if you could let us have the defintion of PDF ?

Having a struct keyword or not before PDF should not make a difference
though.

Yes, it does. If you have a type "struct PDF", you can't refer to it
as "PDF", unless PDF happens to be a typedef for struct PDF. If your
compiler allows you to do so, it's not a C compiler (it's probably a
C++ compiler).

In the code fragment posted by the OP, there's nothing called either
"PDF" or "struct PDF", just a "struct PDF_s".

--
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.

[Jaspreet]

Keith Thompson wrote:

"Jaspreet" <js***********@gmail.com> writes:

I am just making a guess here.

Have you already declared PDF before using it in
void (*freeproc)(PDF *p, void *mem);

It would help if you could let us have the defintion of PDF ?

Having a struct keyword or not before PDF should not make a difference though.

Yes, it does. If you have a type "struct PDF", you can't refer to it
as "PDF", unless PDF happens to be a typedef for struct PDF. If your
compiler allows you to do so, it's not a C compiler (it's probably a
C++ compiler).

I agree to your statement. However, I guess you canot have a function
decl. inside a struct in C. Let me know what I am missing here. I am
using gcc 3.3.2. If I make the file as .c file the compiler complains
about
field declared as a function.

However changing the extension to .cc lets me compile correctly.

So to summarise a function block inside a struct is not allowed in C.
Let me know if I am wrong.

[Keith Thompson]

"Jaspreet" <js***********@gmail.com> writes:
[...]

I agree to your statement. However, I guess you canot have a function
decl. inside a struct in C. Let me know what I am missing here. I am
using gcc 3.3.2. If I make the file as .c file the compiler complains
about
field declared as a function.

However changing the extension to .cc lets me compile correctly.

So to summarise a function block inside a struct is not allowed in C.
Let me know if I am wrong.

It's correct that you can't declare a function inside a struct declaration.

As for what C++ allows, that's a question for comp.lang.c++ (or,
better yet, for your C++ textbook).

--
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.

[CBFalconer]

Jaspreet wrote:

.... snip ...
I agree to your statement. However, I guess you canot have a
function decl. inside a struct in C. Let me know what I am
missing here. I am using gcc 3.3.2. If I make the file as .c file
the compiler complains about field declared as a function.

However changing the extension to .cc lets me compile correctly.

No it doesn't. It just causes the compiler to treat it as C++,
which is another language and has different rules. We don't
discuss C++ here.

--
Some informative links:
news:news.announce.newusers
http://www.geocities.com/nnqweb/
http://www.catb.org/~esr/faqs/smart-questions.html
http://www.caliburn.nl/topposting.html
http://www.netmeister.org/news/learn2quote.html