libcpp: Merge fixes from upstream

GCC preprocessor/29966:
* macro.c (lex_expansion_token): Save and restore cpp_reader's
cur_token.
(_cpp_create_definition): Don't restore cur_token here.
* lex.c (_cpp_lex_token): Added assertion.

GCC preprocessor/28709:
* macro.c (paste_tokens): Remove PASTE_LEFT from the old lhs.

GCC c/31924
* expr.c (interpret_float_suffix): Check for invalid suffix.

GCC preprocessor/14331
* lex.c (_cpp_get_fresh_line):  Don't warn if no newline at EOF.

Fixup whitespacing

Obtained from:	gcc per-4.3 (rev. 121340, 124356, 124358, 124730,
				  125212, 125255 ; GPLv2)
MFC after:	3 weeks

1 files changed, 14 insertions, 10 deletions

diff --git a/contrib/gcclibs/libcpp/expr.c b/contrib/gcclibs/libcpp/expr.c
index 24fcb1b8..ac7252f 100644
--- a/contrib/gcclibs/libcpp/expr.c
+++ b/contrib/gcclibs/libcpp/expr.c
@@ -87,16 +87,19 @@ interpret_float_suffix (const uchar *s, size_t len)
   while (len--)
     switch (s[len])
       {
-      case 'f': case 'F': f++; break;
-      case 'l': case 'L': l++; break;
-      case 'i': case 'I':
-      case 'j': case 'J': i++; break;
-      case 'd': case 'D': 
-	/* Disallow fd, ld suffixes.  */
-	if (d && (f || l))
+      case 'f': case 'F':
+	if (d > 0)
+	  return 0;
+	f++;
+	break;
+      case 'l': case 'L':
+	if (d > 0)
 	  return 0;
-	d++;
+	l++;
 	break;
+      case 'i': case 'I':
+      case 'j': case 'J': i++; break;
+      case 'd': case 'D': d++; break;
       default:
 	return 0;
       }
@@ -494,7 +497,7 @@ append_digit (cpp_num num, int digit, int base, size_t precision)
   if (add_low + digit < add_low)
     add_high++;
   add_low += digit;
-    
+
   if (result.low + add_low < result.low)
     add_high++;
   if (result.high + add_high < result.high)
@@ -1580,7 +1583,8 @@ num_div_op (cpp_reader *pfile, cpp_num lhs, cpp_num rhs, enum cpp_ttype op)
 	{
 	  if (negate)
 	    result = num_negate (result, precision);
-	  result.overflow = num_positive (result, precision) ^ !negate;
+	  result.overflow = (num_positive (result, precision) ^ !negate
+			     && !num_zerop (result));
 	}
 
       return result;