Simplify code parsing integers and, in process fix a -Wuninitialized warning.

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2001-02-15  Andrew Cagney  <ac131313@redhat.com>
+
+	* f-exp.y: Include <ctype.h>.
+	(parse_number): Ensure that ``i'' is always initialized.
+
 2001-02-14  Jim Kingdon  <jkingdon@engr.sgi.com>
 
 	* MAINTAINERS: Add myself to paper trail section.

gdb/f-exp.y

@@ -53,6 +53,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "bfd.h" /* Required by objfiles.h.  */
 #include "symfile.h" /* Required by objfiles.h.  */
 #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
+#include <ctype.h>
 
 /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
    as well as gratuitiously global symbol names, so we can have multiple
@@ -639,7 +640,6 @@ parse_number (p, len, parsed_float, putithere)
 {
   register LONGEST n = 0;
   register LONGEST prevn = 0;
-  register int i;
   register int c;
   register int base = input_radix;
   int unsigned_p = 0;
@@ -697,26 +697,26 @@ parse_number (p, len, parsed_float, putithere)
   while (len-- > 0)
     {
       c = *p++;
-      if (c >= 'A' && c <= 'Z')
-	c += 'a' - 'A';
-      if (c != 'l' && c != 'u')
-	n *= base;
-      if (c >= '0' && c <= '9')
-	n += i = c - '0';
+      if (isupper (c))
+	c = tolower (c);
+      if (len == 0 && c == 'l')
+	long_p = 1;
+      else if (len == 0 && c == 'u')
+	unsigned_p = 1;
       else
 	{
-	  if (base > 10 && c >= 'a' && c <= 'f')
-	    n += i = c - 'a' + 10;
-	  else if (len == 0 && c == 'l') 
-            long_p = 1;
-	  else if (len == 0 && c == 'u')
-	    unsigned_p = 1;
+	  int i;
+	  if (c >= '0' && c <= '9')
+	    i = c - '0';
+	  else if (c >= 'a' && c <= 'f')
+	    i = c - 'a' + 10;
 	  else
 	    return ERROR;	/* Char not a digit */
+	  if (i >= base)
+	    return ERROR;		/* Invalid digit in this base */
+	  n *= base;
+	  n += i;
 	}
-      if (i >= base)
-	return ERROR;		/* Invalid digit in this base */
-      
       /* Portably test for overflow (only works for nonzero values, so make
 	 a second check for zero).  */
       if ((prevn >= n) && n != 0)