Don't include stdio.h.

[gnulib.git] / lib / xstrtol.c

diff --git a/lib/xstrtol.c b/lib/xstrtol.c
index cd85a3f..f4ba50b 100644 (file)
--- a/lib/xstrtol.c
+++ b/lib/xstrtol.c
@@ -21,6 +21,8 @@
 # include <config.h>
 #endif
 
+/* Some pre-ANSI implementations (e.g. SunOS 4)
+   need stderr defined if assertion checking is enabled.  */
 #include <stdio.h>
 
 #if STDC_HEADERS
@@ -36,12 +38,6 @@
 # endif
 #endif
 
-/* Some pre-ANSI implementations (e.g. SunOS 4)
-   need stderr defined if assertion checking is enabled.  */
-#ifndef NDEBUG
-# include <stdio.h>
-#endif
-
 #include <assert.h>
 
 #include <errno.h>
@@ -73,6 +69,18 @@ extern int errno;
 # define LONG_MAX TYPE_MAXIMUM (long int)
 #endif
 
+#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
+# define IN_CTYPE_DOMAIN(c) 1
+#else
+# define IN_CTYPE_DOMAIN(c) isascii(c)
+#endif
+
+#ifdef isblank
+# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+
 #include "xstrtol.h"
 
 __unsigned long int __strtol ();
@@ -111,6 +119,18 @@ __xstrtol (const char *s, char **ptr, int strtol_base,
 
   p = (ptr ? ptr : &t_ptr);
 
+#if STRING_TO_UNSIGNED
+  {
+    const char *q = s;
+    while (ISBLANK (*q))
+      {
+       ++q;
+      }
+    if (*q == '-')
+      return LONGINT_INVALID;
+  }
+#endif
+
   errno = 0;
   tmp = __strtol (s, p, strtol_base);
   if (errno != 0)