cppexp.c (cpp_classify_number): Accept '.' after "0x".

	* cppexp.c (cpp_classify_number): Accept '.' after "0x".
	* testsuite/gcc.dg/cpp/c99-hexfloat-3.c: New file.

From-SVN: r65091

gcc/ChangeLog

+2003-03-31  Michael Matz  <matz@suse.de>
+
+	* cppexp.c (cpp_classify_number): Accept '.' after "0x".
+	* testsuite/gcc.dg/cpp/c99-hexfloat-3.c: New file.
+
 2003-03-31  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* gcov.c: Add -a & -u options.

gcc/cppexp.c

@@ -175,7 +175,8 @@ cpp_classify_number (pfile, token)
       str++;
 
       /* Require at least one hex digit to classify it as hex.  */
-      if ((*str == 'x' || *str == 'X') && ISXDIGIT (str[1]))
+      if ((*str == 'x' || *str == 'X')
+	  && (str[1] == '.' || ISXDIGIT (str[1])))
 	{
 	  radix = 16;
 	  str++;

gcc/testsuite/gcc.dg/cpp/c99-hexfloat-3.c

+/* Test for hex floating point constants: in C99 only.  Compiler test.  */
+/* Origin: Michael Matz <matz@suse.de> */
+/* { dg-do compile } */
+/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
+
+double d = 0x.2p2; /* { dg-bogus "radix 16" "bogus C99 hex float error" } */