# include <config.h>
#endif
+#include <limits.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
return cwd;
#else
+ int saved_errno;
+
/* The initial buffer size for the working directory. A power of 2
detects arithmetic overflow earlier, but is not required. */
# ifndef INITIAL_BUFFER_SIZE
{
char *buf = xmalloc (buf_size);
char *cwd = getcwd (buf, buf_size);
- int saved_errno;
if (cwd)
return cwd;
saved_errno = errno;
free (buf);
if (saved_errno != ERANGE)
- return NULL;
+ break;
+
+#ifdef PATH_MAX
+ if (PATH_MAX / 2 < buf_size)
+ {
+ if (PATH_MAX <= buf_size)
+ break;
+ buf_size = PATH_MAX;
+ continue;
+ }
+#endif
+
buf_size *= 2;
if (buf_size == 0)
xalloc_die ();
}
+
+ errno = saved_errno;
+ return NULL;
#endif
}