Programming

That was a simple off-the-cuff example to demonstrate the semantic and syntax differences between "typedef" and "#define".

The fact that whitespace is treated completely differently in typedef and #define code is another reason to never replace typedef's with #define's.

If you read the link the OP provided, you'd see his problem is compiling. He's not feeding code to a preprocessor except as part of compiling. And I'd love to see a preprocessor so lame it couldn't handle typedef's, which are part of the language spec.

"Find out what's broken and fix it" is much better than "change this and hope it works".

Thank you all! This is way more than expected.

Did some reading, it seems to me the problem is this part of the header:

Code:

#ifndef GNURANDOM
#ifdef __GNUG__
#pragma interface
#else
typedef int _G_int32_t ;   //This is the problem line
#endif
#define GNURANDOM

#include <math.h>
#ifdef __linux
#include <_G_config.h>
#else
#include "random/GnuTypes.h"
#include "random/GnuRandom.h"
#endif
#include "system/Assert.h"

which probably is NOT standard unsigned integer type.
The #ifdef/ifndef and #pragma make me confused with my OS Linux HP32 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I conceptually understand #ifdef/#ifndef, and #pragma, but not sure under my present OS whether they are defined or not. How should I fix this? Thanks a lot!

Try adding the following line after the _G_int32_t typedef:

Code:

typedef unsigned int _G_uint32_t;

Thank you everybody!
After reading this post, finally I got a workaround by replacing the problematic line with this one:

Code:

typedef int int32_t ;

The problem may be related to the non-standard definitions of _G_int32_t and _G_uint32_t in the source code.
It worked after I made the replacements, anyway.