errno.c

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/* FUNCTION: __error */
 
// This is used on MacOS to return the address of a
// variable used for the errno macro.
 
__CPROVER_thread_local int __CPROVER_errno;
 
int *__error(void)
{
  return &__CPROVER_errno;
}
 
/* FUNCTION: __errno_location */
 
// This is used on Linux to return the address of a
// variable used for the errno macro.
 
__CPROVER_thread_local int __CPROVER_errno;
 
int *__errno_location(void)
{
  return &__CPROVER_errno;
}
 
/* FUNCTION: _errno */
 
// This is used on Windows to return the address of a
// variable used for the errno macro.
 
__CPROVER_thread_local int __CPROVER_errno;
 
int *_errno(void)
{
  return &__CPROVER_errno;
}
 
/* FUNCTION: __errno */
 
// This has been spotted in CYGWIN
 
__CPROVER_thread_local int __CPROVER_errno;
 
extern int *__errno(void)
{
  return &__CPROVER_errno;
}
 
/* FUNCTION: ___errno */
 
// This has been spotted on Solaris
 
__CPROVER_thread_local int __CPROVER_errno;
 
extern int *___errno(void)
{
  return &__CPROVER_errno;
}