LinuxQuestions.org - [SOLVED] [squeeze]Found error in standard header?! (bits/errno.h)

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[squeeze]Found error in standard header?! (bits/errno.h)

While building Allegro 4.4, it complained about a superfluous #endif on line 49 of a system header. What a cryptic error! Internet had no answer. Me delves into all the source and cmake scripts of the library. No progress.
Me resumes staring at alleged point of error.

/usr/include/bits/errno.h (start@20)

Code:

#ifdef _ERRNO_H



# undef EDOM

# undef EILSEQ

# undef ERANGE

# include <linux/errno.h>



/* Linux has no ENOTSUP error code.  */

# define ENOTSUP EOPNOTSUPP



/* Older Linux versions also had no ECANCELED error code.  */

# ifndef ECANCELED

#  define ECANCELED        125

# endif



/* Support for error codes [Some binary representations of those codes]

#  define EOWNERDEAD                130

#  define ENOTRECOVERABLE        131

# endif



# ifndef __ASSEMBLER__

/* Function to get address of global `errno' variable.  */

extern int *__errno_location (void) __THROW __attribute__ ((__const__));



#  if !defined _LIBC || defined _LIBC_REENTRANT

/* When using threads, errno is a per-thread value.  */

#  define errno (*__errno_location ())

#  endif

# endif /* !__ASSEMBLER__ */

#endif /* _ERRNO_H */

Except for binary representations, this is exactly what was there. There really was a superfluous #endif on line 38!

Remove binary code, add comment ending, remove #endif. IT WORKED @~~~~0

I can only imagine that this is a deprecated header, or this weird beginning of /usr/include/errorno.h (which is includer of other header) does some voodoo: (the comment shouldn't matter, should it?)

Code:

#ifndef        __need_Emath

# define _ERRNO_H        1

# include <features.h>

#endif



__BEGIN_DECLS



/* Get the error number constants from the system-specific file.

  This file will test __need_Emath and _ERRNO_H.  */

#include <bits/errno.h>

#undef        __need_Emath



#ifdef        _ERRNO_H

If someone can confirm that this header is deprecated, I'd appreciate it. Something needs fixing.

? A buggy version of allegro-4.4 ?

cd allgro-4.4.2/ && mkdir build && cd build/ && cmake ../ && make
http://garr.dl.sourceforge.net/proje...o-4.4.2.tar.gz

I got no errors on any OS, including Debian Squeeze 32bits and 64bits.

The headers /usr/include/bits/errno.h, /usr/include/linux/errno.h
are provided by package 'libc6-dev'.

.

Thanks for trying that. Would you indulge me and have a look at your /usr/include/bits/errno.h, specifically around line 38? I have heard of another user on Ubuntu having the same problem as I did.
I don't know how high the chances are there actually is a mirror that provides faulty files. (But then again the number of files stored over the years is very big.)
-----
GAH. How stupid of me! "Binary codes"? Corrupted file is more like it.

It was memory corruption leading to disk errors. Very small chance such files are distributed defective.