ID:               40683
 User updated by:  lstefani at fortresstech dot com
 Reported By:      lstefani at fortresstech dot com
-Status:           No Feedback
+Status:           Open
 Bug Type:         Compile Warning
 Operating System: linux 2.6.12-1.1381_FC3smp
 PHP Version:      5.2.1
 New Comment:

Sorry for the late response.  Your email hit my company spam filter for
some reason.  Just found it while going through the bulk mail folder.

To answer your question, I'm using the MIPS cross-compiler (GCC 3.3.2
and GLIBC 2.3.2) on Linux x86.  I know that's not the latest GCC
compiler by a long shot, but just from reviewing the code, it does
appear that the const declaration is being discarded by recasting the
parameter as an unsigned char.


Previous Comments:
------------------------------------------------------------------------

[2007-03-09 01:00:01] php-bugs at lists dot php dot net

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

------------------------------------------------------------------------

[2007-03-01 19:59:07] [EMAIL PROTECTED]

What compiler do you use?

------------------------------------------------------------------------

[2007-03-01 19:44:25] lstefani at fortresstech dot com

Description:
------------
Zend/zend_operators.h: In function `void* zend_memrchr(const void*,
int, unsigned int)':
Zend/zend_operators.h:250: warning: cast from `const void*' to
`unsigned char*' discards qualifiers from pointer target type
Zend/zend_operators.h:250: warning: cast from `const void*' to
`unsigned char*' discards qualifiers from pointer target type


In code snippet, line 250 refers to the two recasts of argument s.

Reproduce code:
---------------
static inline void *zend_memrchr(const void *s, int c, size_t n)
{
  register unsigned char *e;

  if (n <= 0) {
    return NULL;
  }

  for (e = (unsigned char *)s + n - 1; e >= (unsigned char *)s; e--) {
    if (*e == (unsigned char)c) {
      return (void *)e;
    }
  }

  return NULL;
}


Expected result:
----------------
No compiler warnings.



------------------------------------------------------------------------


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