Error #2158 Unrecognized type 'ssize_t'

[Jerry]

Dear all,

I am working on adding a graphical user interface to one of my curve-fitting codes. The code compiles and runs correctly with several other compilers (CodeBlocks 2025, Visual Studio, Intel OneAPI, and GCC), but Pelles C reports the following error:

Error #2158: Unrecognized type 'ssize_t'


I have already checked previous discussions on this forum and tried the common suggestions, including adding:

#include <sys/types.h>
#define __STDC_WANT_LIB_EXT2__ 1


Unfortunately, the error persists.

Does anyone know how to properly enable or define ssize_t in Pelles C? My understanding is that ssize_t should be available by default, as it is in the other compilers I have tested.

Any suggestions or guidance would be greatly appreciated. Thank you.

[TimoVJL]

/Go Accepts 'old' names for C runtime functions.

Code Select Expand

#ifndef _SSIZE_T_DEFINED
#define _SSIZE_T_DEFINED
typedef __SSIZE_TYPE__ _ssize_t;
#ifdef __POCC__OLDNAMES
typedef __SSIZE_TYPE__ ssize_t;
#endif /* __POCC__OLDNAMES */
#endif /* SSIZE_T_DEFINED */


[Jerry]

/Go Accepts 'old' names for C runtime functions.

Code Select Expand

#ifndef _SSIZE_T_DEFINED
#define _SSIZE_T_DEFINED
typedef __SSIZE_TYPE__ _ssize_t;
#ifdef __POCC__OLDNAMES
typedef __SSIZE_TYPE__ ssize_t;
#endif /* __POCC__OLDNAMES */
#endif /* SSIZE_T_DEFINED */


Thank you for the suggestion. But the problem persists even after adding the lines to my code.
I think this might be a bug with Pelles C (current version 13.00), as other compilers work fine with my code.

[TimoVJL]

Not a bug.
Don't add that code example.

Just add -Go to pocc commandline, if you don't use poide or add in poide compiler options Define compatbility names

[John Z]

Jerry,

If you are using the IDE check the box in the picture.  This will add /Go to the compile
flags (CFLAGS).

John Z

[Jerry]

Jerry,

If you are using the IDE check the box in the picture.  This will add /Go to the compile
flags (CFLAGS).

John Z

Thank you, John and TimoVJL! The problem is solved!